Fixed GCC warnings.
Fixed GCC warnings.

bkaradzic/bgfx,cuavas/bgfx,attilaz/bgfx,mcanthony/bgfx,mmicko/bgfx,kondrak/bgfx,jpcy/bgfx,darkimage/bgfx,elmindreda/bgfx,ocornut/bgfx,mmicko/bgfx,MikePopoloski/bgfx,LWJGL-CI/bgfx,mmicko/bgfx,andr3wmac/bgfx,aonorin/bgfx,marco-we/bgfx,cyndis/bgfx,bkaradzic/bgfx,emoon/bgfx,Vertexwahn/bgfx,fluffyfreak/bgfx,ktotheoz/bgfx,LWJGL-CI/bgfx,v3n/bgfx,MikePopoloski/bgfx,jdryg/bgfx,septag/bgfx,Extrawurst/bgfx,Synxis/bgfx,Vertexwahn/bgfx,cyndis/bgfx,ocornut/bgfx,darkimage/bgfx,mcanthony/bgfx,v3n/bgfx,fluffyfreak/bgfx,sergeScherbakov/bgfx,LSBOSS/bgfx,0-wiz-0/bgfx,jpcy/bgfx,elmindreda/bgfx,janstk/bgfx,elmindreda/bgfx,0-wiz-0/bgfx,mcanthony/bgfx,attilaz/bgfx,jdryg/bgfx,cuavas/bgfx,ktotheoz/bgfx,LWJGL-CI/bgfx,MikePopoloski/bgfx,jdryg/bgfx,LSBOSS/bgfx,andr3wmac/bgfx,Extrawurst/bgfx,septag/bgfx,v3n/bgfx,jpcy/bgfx,cyndis/bgfx,darkimage/bgfx,jdryg/bgfx,mendsley/bgfx,ming4883/bgfx,ktotheoz/bgfx,mendsley/bgfx,marco-we/bgfx,ming4883/bgfx,BlueCrystalLabs/bgfx,aonorin/bgfx,janstk/bgfx,andr3wmac/bgfx,LSBOSS/bgfx,bkaradzic/bgfx,emoon/bgfx,ocornut/bgfx,0-wiz-0/bgfx,jpcy/bgfx,bkaradzic/bgfx,Vertexwahn/bgfx,kondrak/bgfx,sergeScherbakov/bgfx,BlueCrystalLabs/bgfx,mendsley/bgfx,aonorin/bgfx,BlueCrystalLabs/bgfx,Extrawurst/bgfx,emoon/bgfx,janstk/bgfx,cuavas/bgfx,fluffyfreak/bgfx,kondrak/bgfx,septag/bgfx,attilaz/bgfx,sergeScherbakov/bgfx,Synxis/bgfx,marco-we/bgfx,Synxis/bgfx,LWJGL-CI/bgfx,fluffyfreak/bgfx,ming4883/bgfx