Fix bad reference counting of the initial randr mode set.


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@5111 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/unix/xserver/hw/vnc/xvnc.cc b/unix/xserver/hw/vnc/xvnc.cc
index abb7121..0fb099b 100644
--- a/unix/xserver/hw/vnc/xvnc.cc
+++ b/unix/xserver/hw/vnc/xvnc.cc
@@ -1353,6 +1353,7 @@
 {
     RRCrtcPtr crtc;
     RRModePtr mode;
+    Bool ret;
 
     if (!RRInit())
         return FALSE;
@@ -1371,8 +1372,11 @@
     if (mode == NULL)
         return FALSE;
 
-    vncRandRCrtcSet(pScreen, crtc, mode, 0, 0, RR_Rotate_0,
-                    crtc->numOutputs, crtc->outputs);
+    ret = vncRandRCrtcSet(pScreen, crtc, mode, 0, 0, RR_Rotate_0,
+                          crtc->numOutputs, crtc->outputs);
+    RRModeDestroy(mode);
+    if (!ret)
+        return FALSE;
 
     return TRUE;
 }