Fix crashes in x11vnc, credit to @philippmoeller (#882)

Author: diemol

NodeDebug/start-vnc.sh

@@ -20,7 +20,8 @@ if [ "${START_XVFB}" = true ] ; then
     echo "Waiting for Xvfb..."
   done
 
-  x11vnc ${X11VNC_OPTS} -forever -shared -rfbport 5900 -display ${DISPLAY}
+  # -noxrecord fixes https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=859213 in x11vnc 0.9.13-2
+  x11vnc ${X11VNC_OPTS} -forever -shared -rfbport 5900 -display ${DISPLAY} -noxrecord
 else
   echo "Vnc won't start because Xvfb is configured to not start."
 fi