mesa: Allow FLOAT_32_UNSIGNED_INT_24_8_REV in get_tex_depth_stencil()

Fixes a crash in Khronos OpenGL CTS packed_pixels tests.

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

src/mesa/main/texgetimage.c

@@ -131,8 +131,8 @@ get_tex_depth_stencil(struct gl_context *ctx, GLuint dimensions,
    GLint img, row;
 
    assert(format == GL_DEPTH_STENCIL);
-   assert(type == GL_UNSIGNED_INT_24_8);
-   /* XXX type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV is not handled yet */
+   assert(type == GL_UNSIGNED_INT_24_8 ||
+          type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
 
    for (img = 0; img < depth; img++) {
       GLubyte *srcMap;