Fix crash on trimesh_create

[clayjohn]

Fixes: #33197

As discussed in, #29751, surface->data needs to always be available.

This makes surface->data available as it was before 3f681b0

[akien-mga]

Thanks!

[lawnjelly]

Just to check, 3f681b0 also introduced some error messages e.g.

#ifndef TOOLS_ENABLED
	ERR_PRINT("OpenGL ES 2.0 does not allow retrieving mesh array data");
#endif

Are any of these now redundant now the data has been retained?

[issork]

Just to check, 3f681b0 also introduced some error messages e.g.

#ifndef TOOLS_ENABLED
	ERR_PRINT("OpenGL ES 2.0 does not allow retrieving mesh array data");
#endif

Are any of these now redundant now the data has been retained?

That seems to be the case, my exported GLES2 Project uses both MeshDataTool and create_trimesh_collision(), both spam the console of the exported project with that error message, despite working properly now.