Fix check for xcb_connect failure

Prevents core dump when display can't be opened

Signed-off-by: Alan Coopersmith <alan.coopersmith@sun.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/xlsclients.c b/xlsclients.c
index 2fd0c2b..3a34865 100644
--- a/xlsclients.c
+++ b/xlsclients.c
@@ -189,7 +189,7 @@ main(int argc, char *argv[])
     }
 
     dpy = xcb_connect(displayname, &screen_number);
-    if (!dpy) {
+    if (xcb_connection_has_error(dpy)) {
 	char *name = displayname;
 	if (!name)
 	    name = getenv("DISPLAY");