Metal: Fixed missing vertex attribute.
Metal: Fixed missing vertex attribute.

jdryg/bgfx,emoon/bgfx,bkaradzic/bgfx,jdryg/bgfx,jpcy/bgfx,fluffyfreak/bgfx,jdryg/bgfx,fluffyfreak/bgfx,fluffyfreak/bgfx,MikePopoloski/bgfx,jpcy/bgfx,mendsley/bgfx,attilaz/bgfx,MikePopoloski/bgfx,jdryg/bgfx,attilaz/bgfx,LWJGL-CI/bgfx,bkaradzic/bgfx,mendsley/bgfx,jpcy/bgfx,bkaradzic/bgfx,mendsley/bgfx,bkaradzic/bgfx,LWJGL-CI/bgfx,LWJGL-CI/bgfx,jpcy/bgfx,emoon/bgfx,LWJGL-CI/bgfx,fluffyfreak/bgfx,emoon/bgfx,attilaz/bgfx,MikePopoloski/bgfx