Coverity CID 52: Forward null

	* src/ui/X11/xgccache.c (gc_cache_lookup): Only dereference
	cell/cache->head if not NULL

Signed-off-by: Nelson Ferreira <nelson.ferreira@ieee.org>

diff --git a/src/ui/X11/xgccache.c b/src/ui/X11/xgccache.c
index 2512b1f..8309760 100644 (file)
--- a/src/ui/X11/xgccache.c
+++ b/src/ui/X11/xgccache.c
@@ -233,8 +233,10 @@ GC gc_cache_lookup(struct gc_cache *cache, XGCValues * gcv, unsigned long mask)
                        */
                {
                        cell = cache->head;
-                       cache->head = cell->next;
-                       cache->head->prev = 0;
+                       if (cache->head != null) {
+                               cache->head = cell->next;
+                               cache->head->prev = 0;
+                       }
                        if (cache->tail == cell)
                                cache->tail = 0;        /* only one */
                        XFreeGC(cache->dpy, cell->gc);