Fixed GLES2 build.
Fixed GLES2 build.

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