Fixed memory write error in:
Fixed memory write error in:

void OpenGLTextureCache::Uncache (iTextureHandle *texh)

Removed "->next" after n in l-value within following statement.

n->prev = cached_texture->prev;

Symptom: Was causing an exit memory write error when exiting
"appblocks" in Windows.


git-svn-id: 28d9401aa571d5108e51b194aae6f24ca5964c06@5377 8cc4aa7f-3514-0410-904f-f2cc9021211c

crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS