Fix a crash when no objects are available after filtering
diff --git a/src/fcdbg.c b/src/fcdbg.c
index 210fb57..c2853ff 100644
--- a/src/fcdbg.c
+++ b/src/fcdbg.c
@@ -235,7 +235,7 @@
     {
 	e1 = &FcPatternElts(p1)[i];
 	e2 = &FcPatternElts(p2)[j];
-	if (e1->object != e2->object)
+	if (!e2 || e1->object != e2->object)
 	{
 	    pos = FcPatternPosition (p2, FcObjectName (e1->object));
 	    if (pos >= 0)