mesa: fix height error check for 1D array textures
height=0 is legal for 1D array textures (as depth=0 is legal for
2D arrays). Fixes new piglit ext_texture_array-errors test.
Cc: "10.3 10.4" <mesa-stable@lists.freedesktop.org>
Reviewed-by:
José Fonseca <jfonseca@vmware.com>