[gimp] Bug 755363 - Non-void function should return a value

[Michael Natterer <mitch src gnome org>]

commit 526a3a6020fe19e5c2361e93306006bf1cccc7f4
Author: Michael Natterer <mitch gimp org>
Date:   Mon Sep 21 20:37:29 2015 +0200

    Bug 755363 - Non-void function should return a value
    
    Use g_return_val_if_fail() in function returning non-void.

 app/display/gimptoolgui.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/app/display/gimptoolgui.c b/app/display/gimptoolgui.c
index f2b3dee..2298d8b 100644
--- a/app/display/gimptoolgui.c
+++ b/app/display/gimptoolgui.c
@@ -396,7 +396,7 @@ gimp_tool_gui_get_visible (GimpToolGui *gui)
 {
   GimpToolGuiPrivate *private;
 
-  g_return_if_fail (GIMP_IS_TOOL_GUI (gui));
+  g_return_val_if_fail (GIMP_IS_TOOL_GUI (gui), FALSE);
 
   private = GET_PRIVATE (gui);