fix #4245: IllegalStateException with NFC
fix #4245: IllegalStateException with NFC

Setting the Ndef record creator in onCreate() is the recommended way to
do it. A null can also be returned if no message should be created.

madankb/cgeo,rsudev/c-geo-opensource,xiaoyanit/cgeo,Huertix/cgeo,Bananeweizen/cgeo,brok85/cgeo,tobiasge/cgeo,madankb/cgeo,cgeo/cgeo,cgeo/cgeo,superspindel/cgeo,kumy/cgeo,cgeo/cgeo,S-Bartfast/cgeo,S-Bartfast/cgeo,Huertix/cgeo,pstorch/cgeo,auricgoldfinger/cgeo,SammysHP/cgeo,vishwakulkarni/cgeo,brok85/cgeo,xiaoyanit/cgeo,kumy/cgeo,samueltardieu/cgeo,schwabe/cgeo,tobiasge/cgeo,auricgoldfinger/cgeo,mucek4/cgeo,kumy/cgeo,madankb/cgeo,KublaikhanGeek/cgeo,auricgoldfinger/cgeo,KublaikhanGeek/cgeo,pstorch/cgeo,mucek4/cgeo,superspindel/cgeo,vishwakulkarni/cgeo,SammysHP/cgeo,matej116/cgeo,vishwakulkarni/cgeo,ThibaultR/cgeo,Bananeweizen/cgeo,matej116/cgeo,tobiasge/cgeo,mucek4/cgeo,ThibaultR/cgeo,brok85/cgeo,schwabe/cgeo,lewurm/cgeo,schwabe/cgeo,cgeo/cgeo,samueltardieu/cgeo,schwabe/cgeo,samueltardieu/cgeo,marco-dev/c-geo-opensource,rsudev/c-geo-opensource,yummy222/cgeo,lewurm/cgeo,S-Bartfast/cgeo,superspindel/cgeo,xiaoyanit/cgeo,yummy222/cgeo,Huertix/cgeo,pstorch/cgeo,ThibaultR/cgeo,lewurm/cgeo,rsudev/c-geo-opensource,KublaikhanGeek/cgeo,marco-dev/c-geo-opensource,SammysHP/cgeo,matej116/cgeo,marco-dev/c-geo-opensource,Bananeweizen/cgeo,yummy222/cgeo