patch 7.4.1496

Problem:    Crash when built with GUI but it's not active. (Dominique Pelle)
Solution:   Check gui.in_use.

Author: brammool

src/channel.c

@@ -1046,8 +1046,11 @@ invoke_callback(channel_T *channel, char_u *callback, typval_T *argv)
     cursor_on();
     out_flush();
 #ifdef FEAT_GUI
-    gui_update_cursor(TRUE, FALSE);
-    gui_mch_flush();
+    if (gui.in_use)
+    {
+	gui_update_cursor(TRUE, FALSE);
+	gui_mch_flush();
+    }
 #endif
 }
 

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1496,
 /**/
     1495,
 /**/