[gtk+] Tooltip: Avoid redundant variable initialisations

[Daniel Boles <dboles src gnome org>]

commit 7e38e3075e9c5d591a40b450dd1eac6c25c79c5d
Author: Daniel Boles <dboles src gnome org>
Date:   Mon Mar 20 21:04:49 2017 +0000

    Tooltip: Avoid redundant variable initialisations
    
    has_tooltip_widget was assigned twice in immediate succession.
    
    return_value is not used anywhere else in this function since commit
    14a864c8b55dfe92f8957499f12a3f9303188a12 and does not need a default
    value anymore, so move it to the inner scope and don't init to NULL.

 gtk/gtktooltip.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtktooltip.c b/gtk/gtktooltip.c
index 563a95e..ea4bf31 100644
--- a/gtk/gtktooltip.c
+++ b/gtk/gtktooltip.c
@@ -1388,8 +1388,7 @@ static void
 gtk_tooltip_handle_event_internal (GdkEvent *event)
 {
   gint x, y;
-  gboolean return_value = FALSE;
-  GtkWidget *has_tooltip_widget = NULL;
+  GtkWidget *has_tooltip_widget;
   GdkDisplay *display;
   GtkTooltip *current_tooltip;
 
@@ -1405,6 +1404,8 @@ gtk_tooltip_handle_event_internal (GdkEvent *event)
 
   if (current_tooltip && current_tooltip->keyboard_mode_enabled)
     {
+      gboolean return_value;
+
       has_tooltip_widget = current_tooltip->keyboard_widget;
       if (!has_tooltip_widget)
        return;