Fixed GCC Linux warnings.
Fixed GCC Linux warnings.

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