minor: fix warning from mkdir
minor: fix warning from mkdir

BytesGalore/PetersRIOT,lazytech-org/RIOT,attdona/RIOT,rakendrathapa/RIOT,adjih/RIOT,avmelnikoff/RIOT,plushvoxel/RIOT,lebrush/RIOT,ThanhVic/RIOT,tfar/RIOT,ks156/RIOT,rousselk/RIOT,Darredevil/RIOT,asanka-code/RIOT,roberthartung/RIOT,adrianghc/RIOT,rajma996/RIOT,syin2/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,dhruvvyas90/RIOT,alex1818/RIOT,brettswann/RIOT,beurdouche/RIOT,BytesGalore/PetersRIOT,avmelnikoff/RIOT,RBartz/RIOT,immesys/RiSyn,fnack/RIOT,d00616/RIOT,kerneltask/RIOT,gebart/RIOT,mfrey/RIOT,kbumsik/RIOT,beurdouche/RIOT,automote/RIOT,ThanhVic/RIOT,watr-li/RIOT,ros2/ros2_embedded_riot,rfswarm/RIOT,MarkXYang/RIOT,syin2/RIOT,sumanpanchal/RIOT,ThanhVic/RIOT,kbumsik/RIOT,basilfx/RIOT,jbeyerstedt/RIOT-OTA-update,alignan/RIOT,attdona/RIOT,emmanuelsearch/RIOT,daniel-k/RIOT,AnonMall/RIOT,OlegHahm/RIOT,alex1818/RIOT,abkam07/RIOT,shady33/RIOT,josephnoir/RIOT,mtausig/RIOT,openkosmosorg/RIOT,thomaseichinger/RIOT,plushvoxel/RIOT,rfswarm/RIOT,BytesGalore/PetersRIOT,PSHIVANI/Riot-Code,mtausig/RIOT,OlegHahm/RIOT,MarkXYang/RIOT,mtausig/RIOT,locicontrols/RIOT,sumanpanchal/RIOT,dailab/RIOT,shady33/RIOT,binarylemon/RIOT,aeneby/RIOT,Josar/RIOT,malosek/RIOT,kaspar030/RIOT,brettswann/RIOT,bartfaizoltan/RIOT,DipSwitch/RIOT,herrfz/RIOT,haoyangyu/RIOT,RIOT-OS/RIOT,lebrush/RIOT,toonst/RIOT,brettswann/RIOT,openkosmosorg/RIOT,Lotterleben/RIOT,jremmert-phytec-iot/RIOT,luciotorre/RIOT,kushalsingh007/RIOT,A-Paul/RIOT,syin2/RIOT,herrfz/RIOT,fnack/RIOT,jremmert-phytec-iot/RIOT,kaleb-himes/RIOT,LudwigKnuepfer/RIOT,dkm/RIOT,lebrush/RIOT,daniel-k/RIOT,daniel-k/RIOT,patkan/RIOT,RIOT-OS/RIOT,ximus/RIOT,rfswarm2/RIOT,sumanpanchal/RIOT,tdautc19841202/RIOT,jasonatran/RIOT,PSHIVANI/Riot-Code,biboc/RIOT,thomaseichinger/RIOT,yogo1212/RIOT,ntrtrung/RIOT,Osblouf/RIOT,kb2ma/RIOT,jfischer-phytec-iot/RIOT,gautric/RIOT,zhuoshuguo/RIOT,l3nko/RIOT,thiagohd/RIOT,jfischer-phytec-iot/RIOT,ros2/ros2_embedded_riot,ks156/RIOT,kaspar030/RIOT,AnonMall/RIOT,adjih/RIOT,openkosmosorg/RIOT,attdona/RIOT,rfswarm/RIOT,gautric/RIOT,ximus/RIOT,EmuxEvans/RIOT,haoyangyu/RIOT,hamilton-mote/RIOT-OS,patkan/RIOT,toonst/RIOT,jasonatran/RIOT,cladmi/RIOT,aeneby/RIOT,Osblouf/RIOT,RBartz/RIOT,EmuxEvans/RIOT,koenning/RIOT,patkan/RIOT,neumodisch/RIOT,mziegert/RIOT,ant9000/RIOT,l3nko/RIOT,neumodisch/RIOT,tdautc19841202/RIOT,TobiasFredersdorf/RIOT,Josar/RIOT,lazytech-org/RIOT,RubikonAlpha/RIOT,rfswarm2/RIOT,authmillenon/RIOT,phiros/RIOT,FrancescoErmini/RIOT,Yonezawa-T2/RIOT,khhhh/RIOT,kbumsik/RIOT,abp719/RIOT,MarkXYang/RIOT,ximus/RIOT,jhollister/RIOT,locicontrols/RIOT,LudwigOrtmann/RIOT,JensErdmann/RIOT,Lexandro92/RIOT-CoAP,shady33/RIOT,authmillenon/RIOT,OlegHahm/RIOT,jbeyerstedt/RIOT-OTA-update,binarylemon/RIOT,AnonMall/RIOT,adjih/RIOT,spium/IoT-RIOT,MarkXYang/RIOT,Yonezawa-T2/RIOT,immesys/RiSyn,RIOT-OS/RIOT,herrfz/RIOT,LudwigOrtmann/RIOT,dailab/RIOT,spium/IoT-RIOT,koenning/RIOT,Ell-i/RIOT,aeneby/RIOT,l3nko/RIOT,roberthartung/RIOT,EmuxEvans/RIOT,altairpearl/RIOT,BytesGalore/PetersRIOT,rfuentess/RIOT,gebart/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,arvindpdmn/RIOT,OTAkeys/RIOT,adrianghc/RIOT,stevenj/RIOT,dhruvvyas90/RIOT,patkan/RIOT,jhollister/RIOT,miri64/RIOT,asanka-code/RIOT,automote/RIOT,roberthartung/RIOT,avmelnikoff/RIOT,altairpearl/RIOT,Darredevil/RIOT,marcosalm/RIOT,plushvoxel/RIOT,miri64/RIOT,marcosalm/RIOT,luciotorre/RIOT,nsol-nmsu/RIOT,Osblouf/RIOT,gbarnett/RIOT,automote/RIOT,jferreir/RIOT,stevenj/RIOT,jferreir/RIOT,OTAkeys/RIOT,jferreir/RIOT,rajma996/RIOT,LudwigOrtmann/RIOT,MonsterCode8000/RIOT,gautric/RIOT,TobiasFredersdorf/RIOT,msolters/RIOT,malosek/RIOT,mtausig/RIOT,emmanuelsearch/RIOT,smlng/RIOT,sgso/RIOT,kYc0o/RIOT,JensErdmann/RIOT,RIOT-OS/RIOT,jferreir/RIOT,josephnoir/RIOT,sgso/RIOT,dhruvvyas90/RIOT,locicontrols/RIOT,changbiao/RIOT,DipSwitch/RIOT,msolters/RIOT,asanka-code/RIOT,LudwigKnuepfer/RIOT,mziegert/RIOT,neumodisch/RIOT,rousselk/RIOT,yogo1212/RIOT,lebrush/RIOT,haoyangyu/RIOT,MohmadAyman/RIOT,adjih/RIOT,Lotterleben/RIOT,TobiasFredersdorf/RIOT,PSHIVANI/Riot-Code,immesys/RiSyn,marcosalm/RIOT,luciotorre/RIOT,A-Paul/RIOT,msolters/RIOT,haoyangyu/RIOT,abkam07/RIOT,daniel-k/RIOT,ros2/ros2_embedded_riot,lebrush/RIOT,MonsterCode8000/RIOT,koenning/RIOT,katezilla/RIOT,FrancescoErmini/RIOT,AnonMall/RIOT,robixnai/RIOT,khhhh/RIOT,malosek/RIOT,dhruvvyas90/RIOT,kYc0o/RIOT,Yonezawa-T2/RIOT,marcosalm/RIOT,ntrtrung/RIOT,benoit-canet/RIOT,hamilton-mote/RIOT-OS,gbarnett/RIOT,watr-li/RIOT,automote/RIOT,watr-li/RIOT,centurysys/RIOT,cladmi/RIOT,khhhh/RIOT,OTAkeys/RIOT,fnack/RIOT,chris-wood/RIOT,1blankz7/RIOT,ks156/RIOT,herrfz/RIOT-old,spium/IoT-RIOT,x3ro/RIOT,BytesGalore/RIOT,brettswann/RIOT,bartfaizoltan/RIOT,d00616/RIOT,l3nko/RIOT,kerneltask/RIOT,ks156/RIOT,fnack/RIOT,miri64/RIOT,gebart/RIOT,RBartz/RIOT,jasonatran/RIOT,sumanpanchal/RIOT,sgso/RIOT,jhollister/RIOT,tfar/RIOT,BytesGalore/PetersRIOT,kushalsingh007/RIOT,jremmert-phytec-iot/RIOT,gautric/RIOT,DipSwitch/RIOT,mziegert/RIOT,latsku/RIOT,adrianghc/RIOT,Ell-i/RIOT,herrfz/RIOT-old,mziegert/RIOT,kaleb-himes/RIOT,avmelnikoff/RIOT,ximus/RIOT,jremmert-phytec-iot/RIOT,hamilton-mote/RIOT-OS,gbarnett/RIOT,daniel-k/RIOT,syin2/RIOT,authmillenon/RIOT,jremmert-phytec-iot/RIOT,avmelnikoff/RIOT,neiljay/RIOT,LudwigKnuepfer/RIOT,khhhh/RIOT,DipSwitch/RIOT,centurysys/RIOT,backenklee/RIOT,alignan/RIOT,bartfaizoltan/RIOT,ros2/ros2_embedded_riot,RBartz/RIOT,MonsterCode8000/RIOT,rakendrathapa/RIOT,thiagohd/RIOT,malosek/RIOT,latsku/RIOT,EmuxEvans/RIOT,yogo1212/RIOT,fnack/RIOT,binarylemon/RIOT,robixnai/RIOT,kushalsingh007/RIOT,MonsterCode8000/RIOT,benoit-canet/RIOT,Hyungsin/RIOT-OS,BytesGalore/RIOT,rakendrathapa/RIOT,fnack/RIOT,authmillenon/RIOT,stevenj/RIOT,RBartz/RIOT,bartfaizoltan/RIOT,jfischer-phytec-iot/RIOT,ximus/RIOT,l3nko/RIOT,alex1818/RIOT,dkm/RIOT,MonsterCode8000/RIOT,phiros/RIOT,wentaoshang/RIOT,ant9000/RIOT,ThanhVic/RIOT,nsol-nmsu/RIOT,phiros/RIOT,stevenj/RIOT,JensErdmann/RIOT,Darredevil/RIOT,benoit-canet/RIOT,josephnoir/RIOT,toonst/RIOT,brettswann/RIOT,rfuentess/RIOT,d00616/RIOT,x3ro/RIOT,arvindpdmn/RIOT,rfuentess/RIOT,LudwigOrtmann/RIOT,ros2/ros2_embedded_riot,aeneby/RIOT,msolters/RIOT,bartfaizoltan/RIOT,kaleb-himes/RIOT,nsol-nmsu/RIOT,herrfz/RIOT-old,MohmadAyman/RIOT,jasonatran/RIOT,spium/IoT-RIOT,mtausig/RIOT,herrfz/RIOT,robixnai/RIOT,benoit-canet/RIOT,automote/RIOT,kbumsik/RIOT,zhuoshuguo/RIOT,biboc/RIOT,1blankz7/RIOT,wentaoshang/RIOT,Hyungsin/RIOT-OS,latsku/RIOT,Lexandro92/RIOT-CoAP,Ell-i/RIOT,arvindpdmn/RIOT,tdautc19841202/RIOT,rfuentess/RIOT,khhhh/RIOT,OTAkeys/RIOT,x3ro/RIOT,Lotterleben/RIOT,mziegert/RIOT,latsku/RIOT,JensErdmann/RIOT,abp719/RIOT,Hyungsin/RIOT-OS,gbarnett/RIOT,rajma996/RIOT,RBartz/RIOT,phiros/RIOT,BytesGalore/PetersRIOT,yogo1212/RIOT,smlng/RIOT,EmuxEvans/RIOT,MarkXYang/RIOT,kaleb-himes/RIOT,alignan/RIOT,arvindpdmn/RIOT,rfswarm2/RIOT,mfrey/RIOT,ximus/RIOT,latsku/RIOT,Ell-i/RIOT,centurysys/RIOT,MonsterCode8000/RIOT,gautric/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,shady33/RIOT,PSHIVANI/Riot-Code,jferreir/RIOT,smlng/RIOT,rajma996/RIOT,robixnai/RIOT,neiljay/RIOT,rakendrathapa/RIOT,tfar/RIOT,jbeyerstedt/RIOT-OTA-update,spium/IoT-RIOT,rfuentess/RIOT,immesys/RiSyn,roberthartung/RIOT,stevenj/RIOT,kerneltask/RIOT,attdona/RIOT,cladmi/RIOT,shady33/RIOT,luciotorre/RIOT,basilfx/RIOT,josephnoir/RIOT,gebart/RIOT,syin2/RIOT,locicontrols/RIOT,kaspar030/RIOT,mfrey/RIOT,beurdouche/RIOT,kYc0o/RIOT,rousselk/RIOT,Osblouf/RIOT,lazytech-org/RIOT,watr-li/RIOT,ks156/RIOT,luciotorre/RIOT,immesys/RiSyn,centurysys/RIOT,DipSwitch/RIOT,ant9000/RIOT,marcosalm/RIOT,chris-wood/RIOT,TobiasFredersdorf/RIOT,mfrey/RIOT,A-Paul/RIOT,chris-wood/RIOT,Lexandro92/RIOT-CoAP,ThanhVic/RIOT,toonst/RIOT,ntrtrung/RIOT,d00616/RIOT,JensErdmann/RIOT,chris-wood/RIOT,thomaseichinger/RIOT,dhruvvyas90/RIOT,AnonMall/RIOT,patkan/RIOT,backenklee/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,thiagohd/RIOT,A-Paul/RIOT,x3ro/RIOT,thomaseichinger/RIOT,1blankz7/RIOT,jremmert-phytec-iot/RIOT,sgso/RIOT,kYc0o/RIOT,arvindpdmn/RIOT,rajma996/RIOT,attdona/RIOT,kb2ma/RIOT,dkm/RIOT,sgso/RIOT,rajma996/RIOT,herrfz/RIOT-old,alignan/RIOT,lazytech-org/RIOT,emmanuelsearch/RIOT,rousselk/RIOT,miri64/RIOT,gbarnett/RIOT,rfswarm2/RIOT,aeneby/RIOT,Lotterleben/RIOT,beurdouche/RIOT,rousselk/RIOT,koenning/RIOT,Lexandro92/RIOT-CoAP,asanka-code/RIOT,bartfaizoltan/RIOT,katezilla/RIOT,jbeyerstedt/RIOT-OTA-update,ros2/ros2_embedded_riot,Josar/RIOT,Hyungsin/RIOT-OS,toonst/RIOT,LudwigOrtmann/RIOT,jhollister/RIOT,asanka-code/RIOT,gebart/RIOT,nsol-nmsu/RIOT,Lexandro92/RIOT-CoAP,LudwigOrtmann/RIOT,rfswarm2/RIOT,abp719/RIOT,MohmadAyman/RIOT,herrfz/RIOT,abkam07/RIOT,kushalsingh007/RIOT,OlegHahm/RIOT,wentaoshang/RIOT,d00616/RIOT,Yonezawa-T2/RIOT,sumanpanchal/RIOT,Darredevil/RIOT,neiljay/RIOT,alex1818/RIOT,neumodisch/RIOT,DipSwitch/RIOT,phiros/RIOT,ntrtrung/RIOT,binarylemon/RIOT,yogo1212/RIOT,chris-wood/RIOT,basilfx/RIOT,emmanuelsearch/RIOT,basilfx/RIOT,altairpearl/RIOT,OTAkeys/RIOT,wentaoshang/RIOT,katezilla/RIOT,backenklee/RIOT,jferreir/RIOT,kaspar030/RIOT,katezilla/RIOT,ThanhVic/RIOT,patkan/RIOT,kaleb-himes/RIOT,automote/RIOT,koenning/RIOT,jhollister/RIOT,adjih/RIOT,watr-li/RIOT,BytesGalore/RIOT,openkosmosorg/RIOT,katezilla/RIOT,Yonezawa-T2/RIOT,luciotorre/RIOT,FrancescoErmini/RIOT,changbiao/RIOT,lazytech-org/RIOT,openkosmosorg/RIOT,Lotterleben/RIOT,backenklee/RIOT,haoyangyu/RIOT,hamilton-mote/RIOT-OS,authmillenon/RIOT,RubikonAlpha/RIOT,cladmi/RIOT,1blankz7/RIOT,rfswarm/RIOT,LudwigKnuepfer/RIOT,adrianghc/RIOT,robixnai/RIOT,Hyungsin/RIOT-OS,rakendrathapa/RIOT,zhuoshuguo/RIOT,RubikonAlpha/RIOT,chris-wood/RIOT,dkm/RIOT,kerneltask/RIOT,altairpearl/RIOT,josephnoir/RIOT,abp719/RIOT,immesys/RiSyn,kaspar030/RIOT,Lotterleben/RIOT,1blankz7/RIOT,sgso/RIOT,ntrtrung/RIOT,neiljay/RIOT,BytesGalore/PetersRIOT,dailab/RIOT,tdautc19841202/RIOT,koenning/RIOT,malosek/RIOT,kerneltask/RIOT,BytesGalore/RIOT,Yonezawa-T2/RIOT,smlng/RIOT,arvindpdmn/RIOT,asanka-code/RIOT,biboc/RIOT,thiagohd/RIOT,abkam07/RIOT,robixnai/RIOT,altairpearl/RIOT,OlegHahm/RIOT,jasonatran/RIOT,gbarnett/RIOT,kb2ma/RIOT,biboc/RIOT,Osblouf/RIOT,dailab/RIOT,zhuoshuguo/RIOT,1blankz7/RIOT,stevenj/RIOT,biboc/RIOT,kbumsik/RIOT,MohmadAyman/RIOT,wentaoshang/RIOT,dailab/RIOT,EmuxEvans/RIOT,kushalsingh007/RIOT,FrancescoErmini/RIOT,hamilton-mote/RIOT-OS,backenklee/RIOT,jfischer-phytec-iot/RIOT,neiljay/RIOT,locicontrols/RIOT,tdautc19841202/RIOT,ntrtrung/RIOT,JensErdmann/RIOT,kYc0o/RIOT,centurysys/RIOT,ant9000/RIOT,plushvoxel/RIOT,altairpearl/RIOT,neumodisch/RIOT,adrianghc/RIOT,khhhh/RIOT,jhollister/RIOT,kb2ma/RIOT,shady33/RIOT,rakendrathapa/RIOT,abkam07/RIOT,thiagohd/RIOT,x3ro/RIOT,abkam07/RIOT,Josar/RIOT,FrancescoErmini/RIOT,Lotterleben/RIOT,RubikonAlpha/RIOT,alex1818/RIOT,smlng/RIOT,emmanuelsearch/RIOT,spium/IoT-RIOT,PSHIVANI/Riot-Code,d00616/RIOT,malosek/RIOT,alignan/RIOT,changbiao/RIOT,zhuoshuguo/RIOT,abp719/RIOT,attdona/RIOT,nsol-nmsu/RIOT,BytesGalore/RIOT,cladmi/RIOT,changbiao/RIOT,centurysys/RIOT,kushalsingh007/RIOT,MarkXYang/RIOT,openkosmosorg/RIOT,kb2ma/RIOT,rousselk/RIOT,miri64/RIOT,rfswarm2/RIOT,Josar/RIOT,tfar/RIOT,yogo1212/RIOT,phiros/RIOT,changbiao/RIOT,binarylemon/RIOT,jfischer-phytec-iot/RIOT,latsku/RIOT,abp719/RIOT,dhruvvyas90/RIOT,locicontrols/RIOT,mziegert/RIOT,MohmadAyman/RIOT,haoyangyu/RIOT,AnonMall/RIOT,herrfz/RIOT,jbeyerstedt/RIOT-OTA-update,PSHIVANI/Riot-Code,tdautc19841202/RIOT,TobiasFredersdorf/RIOT,MohmadAyman/RIOT,mfrey/RIOT,msolters/RIOT,Darredevil/RIOT,benoit-canet/RIOT,roberthartung/RIOT,rfswarm/RIOT,tfar/RIOT,thomaseichinger/RIOT,ant9000/RIOT,Darredevil/RIOT,watr-li/RIOT,changbiao/RIOT,ros2/ros2_embedded_riot,benoit-canet/RIOT,zhuoshuguo/RIOT,neumodisch/RIOT,daniel-k/RIOT,msolters/RIOT,A-Paul/RIOT,marcosalm/RIOT,wentaoshang/RIOT,Ell-i/RIOT,brettswann/RIOT,alex1818/RIOT,l3nko/RIOT,rfswarm/RIOT,beurdouche/RIOT,plushvoxel/RIOT,lebrush/RIOT,locicontrols/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,herrfz/RIOT-old,Lexandro92/RIOT-CoAP,binarylemon/RIOT,RubikonAlpha/RIOT,dkm/RIOT,FrancescoErmini/RIOT,emmanuelsearch/RIOT,Osblouf/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,LudwigKnuepfer/RIOT,thiagohd/RIOT,basilfx/RIOT,sumanpanchal/RIOT,RubikonAlpha/RIOT