X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?p=xscreensaver;a=blobdiff_plain;f=utils%2Fsgivideo.c;h=38b0c669e9b0a2249a717f20409652b4d3225d9c;hp=9fc0b781eacdc53af22fb36349858bcd5a9d572f;hb=14627f4038ada5d11456f3770090f3c39740d70f;hpb=93f25dc6827112d98b8b855ea85c8f5eb8123086

diff --git a/utils/sgivideo.c b/utils/sgivideo.c
index 9fc0b781..38b0c669 100644
--- a/utils/sgivideo.c
+++ b/utils/sgivideo.c
@@ -318,13 +318,19 @@ grab_video_frame(Screen *screen, Visual *visual, Drawable dest)
     {
       int i;
       VLServer server = vlOpenVideo (NULL);
+
+      if (!server) return False;
+
       for (i = 0; i < 5; i++)	/* if we get all black images, retry up to
 				   five times. */
 	{
 	  VLDevList dl;
 	  int j;
-	  vlGetDeviceList(server, &dl);
-	  vlCloseVideo(server);
+
+          j = vlGetDeviceList(server, &dl);
+          vlCloseVideo(server);
+          if (j < 0) return False;
+
 	  for (j = 0; j < dl.numDevices; j++)
 	    {
 	      VLDevice *d = &dl.devices[j];