added return code

gaboshlib/g_staleumount.bashfunc

@@ -1,12 +1,15 @@
 #!/bin/bash
 
 function g_staleumount {
+  g_return=0
   grep -v tracefs /proc/mounts | grep -v /run/ | cut -d' ' -f2 | while read g_mount
   do
     if ! timeout --signal=KILL 120 ls -d "$g_mount" >/dev/null
     then
       g_echo_error "Unmounting stale/hanging $g_mount with -lf"
       umount -lf "$g_mount"
+      return=1
     fi
   done
+  return $g_return
 }