dmxBERestoreRenderGlyph was passing wrong value to free

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
(cherry picked from commit c0799779df)

hw/dmx/dmxextension.c

@@ -1160,7 +1160,7 @@ static void dmxBERestoreRenderGlyph(pointer value, XID id, pointer n)
 		     len_images);
 
     /* Clean up */
-    free(len_images);
+    free(images);
     free(gids);
     free(glyphs);    
 }