Fix compilation when the SUPPORT_MESH_GENERATION feature is not supported (previously, the loadModel function was using the GenMeshCube texture, if no model founded, to generate a default cube mesh (#1075)
TraceLog(LOG_WARNING,"[%s] No meshes can be loaded, default to cube mesh",fileName);
model.meshes[0]=GenMeshCube(1.0f,1.0f,1.0f);
#else
TraceLog(LOG_WARNING,"[%s] No meshes can be loaded, and can't create a default mesh. The raylib mesh generation is not supported (SUPPORT_MESH_GENERATION).",fileName);