gnrc_ipv6: fix packet snip switch-up
gnrc_ipv6: fix packet snip switch-up

immesys/RiSyn,kYc0o/RIOT,kYc0o/RIOT,mfrey/RIOT,roberthartung/RIOT,toonst/RIOT,rfuentess/RIOT,roberthartung/RIOT,OlegHahm/RIOT,authmillenon/RIOT,x3ro/RIOT,roberthartung/RIOT,basilfx/RIOT,LudwigOrtmann/RIOT,jasonatran/RIOT,miri64/RIOT,gebart/RIOT,cladmi/RIOT,mtausig/RIOT,lazytech-org/RIOT,gebart/RIOT,kaspar030/RIOT,aeneby/RIOT,LudwigOrtmann/RIOT,OlegHahm/RIOT,ant9000/RIOT,cladmi/RIOT,basilfx/RIOT,roberthartung/RIOT,authmillenon/RIOT,rfuentess/RIOT,A-Paul/RIOT,avmelnikoff/RIOT,LudwigKnuepfer/RIOT,kbumsik/RIOT,BytesGalore/RIOT,cladmi/RIOT,LudwigOrtmann/RIOT,BytesGalore/RIOT,immesys/RiSyn,basilfx/RIOT,smlng/RIOT,josephnoir/RIOT,RIOT-OS/RIOT,toonst/RIOT,miri64/RIOT,ant9000/RIOT,immesys/RiSyn,jasonatran/RIOT,OTAkeys/RIOT,authmillenon/RIOT,mtausig/RIOT,Josar/RIOT,kbumsik/RIOT,RIOT-OS/RIOT,gebart/RIOT,LudwigOrtmann/RIOT,roberthartung/RIOT,immesys/RiSyn,x3ro/RIOT,authmillenon/RIOT,smlng/RIOT,RIOT-OS/RIOT,biboc/RIOT,x3ro/RIOT,ant9000/RIOT,neiljay/RIOT,kbumsik/RIOT,avmelnikoff/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,aeneby/RIOT,BytesGalore/RIOT,smlng/RIOT,yogo1212/RIOT,cladmi/RIOT,basilfx/RIOT,josephnoir/RIOT,yogo1212/RIOT,LudwigOrtmann/RIOT,miri64/RIOT,mfrey/RIOT,neiljay/RIOT,toonst/RIOT,mfrey/RIOT,neiljay/RIOT,Josar/RIOT,toonst/RIOT,kYc0o/RIOT,josephnoir/RIOT,jasonatran/RIOT,BytesGalore/RIOT,toonst/RIOT,OlegHahm/RIOT,yogo1212/RIOT,OTAkeys/RIOT,mtausig/RIOT,aeneby/RIOT,Josar/RIOT,kYc0o/RIOT,mfrey/RIOT,rfuentess/RIOT,kbumsik/RIOT,rfuentess/RIOT,cladmi/RIOT,LudwigKnuepfer/RIOT,x3ro/RIOT,yogo1212/RIOT,immesys/RiSyn,lazytech-org/RIOT,OTAkeys/RIOT,mtausig/RIOT,ant9000/RIOT,smlng/RIOT,biboc/RIOT,josephnoir/RIOT,avmelnikoff/RIOT,rfuentess/RIOT,LudwigOrtmann/RIOT,LudwigKnuepfer/RIOT,mtausig/RIOT,neiljay/RIOT,miri64/RIOT,authmillenon/RIOT,kYc0o/RIOT,A-Paul/RIOT,biboc/RIOT,miri64/RIOT,A-Paul/RIOT,immesys/RiSyn,lazytech-org/RIOT,OlegHahm/RIOT,yogo1212/RIOT,lazytech-org/RIOT,LudwigKnuepfer/RIOT,gebart/RIOT,biboc/RIOT,lazytech-org/RIOT,biboc/RIOT,LudwigKnuepfer/RIOT,OTAkeys/RIOT,mfrey/RIOT,smlng/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,Josar/RIOT,josephnoir/RIOT,neiljay/RIOT,A-Paul/RIOT,avmelnikoff/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,kbumsik/RIOT,kaspar030/RIOT,avmelnikoff/RIOT,jasonatran/RIOT,Josar/RIOT,x3ro/RIOT,kaspar030/RIOT,gebart/RIOT,basilfx/RIOT,A-Paul/RIOT,ant9000/RIOT,aeneby/RIOT,yogo1212/RIOT,aeneby/RIOT,BytesGalore/RIOT