fix #3504: NPE in map touch
fix #3504: NPE in map touch
superspindel/cgeo,marco-dev/c-geo-opensource,yummy222/cgeo,Bananeweizen/cgeo,schwabe/cgeo,brok85/cgeo,auricgoldfinger/cgeo,rsudev/c-geo-opensource,samueltardieu/cgeo,lewurm/cgeo,S-Bartfast/cgeo,samueltardieu/cgeo,schwabe/cgeo,madankb/cgeo,vishwakulkarni/cgeo,superspindel/cgeo,Huertix/cgeo,cgeo/cgeo,yummy222/cgeo,vishwakulkarni/cgeo,madankb/cgeo,matej116/cgeo,KublaikhanGeek/cgeo,schwabe/cgeo,superspindel/cgeo,auricgoldfinger/cgeo,ThibaultR/cgeo,Huertix/cgeo,Bananeweizen/cgeo,SammysHP/cgeo,brok85/cgeo,S-Bartfast/cgeo,Bananeweizen/cgeo,cgeo/cgeo,KublaikhanGeek/cgeo,tobiasge/cgeo,pstorch/cgeo,KublaikhanGeek/cgeo,rsudev/c-geo-opensource,SammysHP/cgeo,mucek4/cgeo,lewurm/cgeo,mucek4/cgeo,SammysHP/cgeo,samueltardieu/cgeo,xiaoyanit/cgeo,pstorch/cgeo,ThibaultR/cgeo,auricgoldfinger/cgeo,matej116/cgeo,yummy222/cgeo,Huertix/cgeo,tobiasge/cgeo,lewurm/cgeo,brok85/cgeo,cgeo/cgeo,madankb/cgeo,xiaoyanit/cgeo,ThibaultR/cgeo,kumy/cgeo,tobiasge/cgeo,matej116/cgeo,cgeo/cgeo,kumy/cgeo,marco-dev/c-geo-opensource,S-Bartfast/cgeo,kumy/cgeo,xiaoyanit/cgeo,schwabe/cgeo,marco-dev/c-geo-opensource,rsudev/c-geo-opensource,vishwakulkarni/cgeo,mucek4/cgeo,pstorch/cgeo