From 0d1337e9df9b0dfc4abccd6f831394219377e909 Mon Sep 17 00:00:00 2001
From: ellson <devnull@localhost>
Date: Sat, 11 Jun 2011 15:13:59 +0000
Subject: [PATCH] Fix #0001930

---
 lib/gvc/gvplugin.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/gvc/gvplugin.c b/lib/gvc/gvplugin.c
index 3336201e1..cb8e2856e 100644
--- a/lib/gvc/gvplugin.c
+++ b/lib/gvc/gvplugin.c
@@ -362,6 +362,10 @@ char *gvplugin_list(GVC_t * gvc, api_t api, const char *str)
     if (api < 0)
 	return NULL;
 
+    /* check for valid str */
+    if (! str)
+	return NULL;
+
     if (first) {
 	agxbinit(&xb, 0, 0);
 	first = 0;
-- 
2.40.0