Fix multichar character constant warning
Fix multichar character constant warning

Multi-character character constants are implementation defined,
and therefore they are risky to use for use when trying to be compatible
with so many different platforms. Fixes #2540.

guilhermefelipecgs/godot,n-pigeon/godot,josempans/godot,vnen/godot,vnen/godot,rollenrolm/godot,pixelpicosean/my-godot-2.1,vkbsb/godot,firefly2442/godot,ex/godot,Zylann/godot,Shockblast/godot,DmitriySalnikov/godot,NateWardawg/godot,MarianoGnu/godot,vkbsb/godot,ZuBsPaCe/godot,Shockblast/godot,ZuBsPaCe/godot,BastiaanOlij/godot,ageazrael/godot,rollenrolm/godot,akien-mga/godot,sanikoyes/godot,exabon/godot,okamstudio/godot,ficoos/godot,huziyizero/godot,TheHX/godot,Marqin/godot,NateWardawg/godot,vnen/godot,RebelliousX/Go_Dot,rollenrolm/godot,josempans/godot,Marqin/godot,guilhermefelipecgs/godot,Zylann/godot,Marqin/godot,Zylann/godot,rollenrolm/godot,Brickcaster/godot,FateAce/godot,Shockblast/godot,RebelliousX/Go_Dot,groud/godot,morrow1nd/godot,Zylann/godot,NateWardawg/godot,akien-mga/godot,vkbsb/godot,groud/godot,ex/godot,godotengine/godot,godotengine/godot,MrMaidx/godot,josempans/godot,josempans/godot,pixelpicosean/my-godot-2.1,ageazrael/godot,NateWardawg/godot,Brickcaster/godot,MrMaidx/godot,tomreyn/godot,josempans/godot,BastiaanOlij/godot,BastiaanOlij/godot,RandomShaper/godot,NateWardawg/godot,groud/godot,ageazrael/godot,exabon/godot,vnen/godot,Paulloz/godot,gau-veldt/godot,MarianoGnu/godot,pkowal1982/godot,josempans/godot,honix/godot,RandomShaper/godot,zicklag/godot,Max-Might/godot,okamstudio/godot,ageazrael/godot,Paulloz/godot,ZuBsPaCe/godot,BastiaanOlij/godot,firefly2442/godot,Brickcaster/godot,Faless/godot,Zylann/godot,huziyizero/godot,Faless/godot,josempans/godot,okamstudio/godot,pkowal1982/godot,okamstudio/godot,MarianoGnu/godot,FateAce/godot,Faless/godot,RandomShaper/godot,ficoos/godot,ZuBsPaCe/godot,groud/godot,Shockblast/godot,pkowal1982/godot,okamstudio/godot,guilhermefelipecgs/godot,ex/godot,n-pigeon/godot,MarianoGnu/godot,jejung/godot,morrow1nd/godot,huziyizero/godot,vnen/godot,Valentactive/godot,Valentactive/godot,NateWardawg/godot,rollenrolm/godot,okamstudio/godot,Max-Might/godot,sanikoyes/godot,TheHX/godot,Faless/godot,gau-veldt/godot,pixelpicosean/my-godot-2.1,Brickcaster/godot,MarianoGnu/godot,honix/godot,honix/godot,exabon/godot,RandomShaper/godot,okamstudio/godot,ZuBsPaCe/godot,godotengine/godot,jejung/godot,okamstudio/godot,Paulloz/godot,ex/godot,zicklag/godot,akien-mga/godot,RandomShaper/godot,mcanders/godot,n-pigeon/godot,huziyizero/godot,firefly2442/godot,tomreyn/godot,NateWardawg/godot,MarianoGnu/godot,FateAce/godot,ex/godot,gau-veldt/godot,sanikoyes/godot,pkowal1982/godot,Paulloz/godot,firefly2442/godot,pixelpicosean/my-godot-2.1,Max-Might/godot,RebelliousX/Go_Dot,Shockblast/godot,jejung/godot,Zylann/godot,DmitriySalnikov/godot,mcanders/godot,MrMaidx/godot,FateAce/godot,zicklag/godot,tomreyn/godot,vnen/godot,Faless/godot,DmitriySalnikov/godot,Paulloz/godot,akien-mga/godot,vkbsb/godot,Zylann/godot,BastiaanOlij/godot,zicklag/godot,vnen/godot,Shockblast/godot,n-pigeon/godot,godotengine/godot,guilhermefelipecgs/godot,FateAce/godot,groud/godot,BastiaanOlij/godot,jejung/godot,okamstudio/godot,TheHX/godot,sanikoyes/godot,Faless/godot,n-pigeon/godot,ficoos/godot,Marqin/godot,RebelliousX/Go_Dot,firefly2442/godot,tomreyn/godot,ficoos/godot,BastiaanOlij/godot,vkbsb/godot,exabon/godot,MarianoGnu/godot,morrow1nd/godot,groud/godot,Zylann/godot,RandomShaper/godot,DmitriySalnikov/godot,MrMaidx/godot,exabon/godot,morrow1nd/godot,akien-mga/godot,Shockblast/godot,jejung/godot,ageazrael/godot,RandomShaper/godot,Brickcaster/godot,exabon/godot,TheHX/godot,Brickcaster/godot,zicklag/godot,gau-veldt/godot,ZuBsPaCe/godot,firefly2442/godot,vkbsb/godot,Paulloz/godot,Faless/godot,NateWardawg/godot,ageazrael/godot,guilhermefelipecgs/godot,Valentactive/godot,mcanders/godot,honix/godot,firefly2442/godot,pkowal1982/godot,Marqin/godot,akien-mga/godot,vkbsb/godot,Paulloz/godot,ficoos/godot,Valentactive/godot,honix/godot,ex/godot,DmitriySalnikov/godot,Valentactive/godot,guilhermefelipecgs/godot,TheHX/godot,godotengine/godot,mcanders/godot,n-pigeon/godot,NateWardawg/godot,honix/godot,godotengine/godot,ZuBsPaCe/godot,Marqin/godot,Valentactive/godot,sanikoyes/godot,akien-mga/godot,Brickcaster/godot,morrow1nd/godot,Valentactive/godot,vkbsb/godot,Faless/godot,ex/godot,sanikoyes/godot,zicklag/godot,pkowal1982/godot,pkowal1982/godot,ex/godot,josempans/godot,firefly2442/godot,MrMaidx/godot,pkowal1982/godot,jejung/godot,okamstudio/godot,MarianoGnu/godot,mcanders/godot,mcanders/godot,FateAce/godot,ZuBsPaCe/godot,guilhermefelipecgs/godot,vnen/godot,pixelpicosean/my-godot-2.1,Valentactive/godot,morrow1nd/godot,sanikoyes/godot,Max-Might/godot,ageazrael/godot,huziyizero/godot,akien-mga/godot,MrMaidx/godot,godotengine/godot,n-pigeon/godot,Shockblast/godot,ficoos/godot,sanikoyes/godot,godotengine/godot,gau-veldt/godot,BastiaanOlij/godot,DmitriySalnikov/godot,RebelliousX/Go_Dot,Max-Might/godot,RebelliousX/Go_Dot,guilhermefelipecgs/godot,DmitriySalnikov/godot,Max-Might/godot,tomreyn/godot