[epiphany] Don't perform empty searches when toggling case matches

[William Jon McCann <mccann src gnome org>]

commit d7760e521f4fe12b04a667bd50cf8fc2dcd87157
Author: William Jon McCann <jmccann redhat com>
Date:   Sun Dec 9 16:41:01 2012 +0100

    Don't perform empty searches when toggling case matches
    
    https://bugzilla.gnome.org/show_bug.cgi?id=684023

 src/ephy-find-toolbar.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/ephy-find-toolbar.c b/src/ephy-find-toolbar.c
index 901dc68..d2c504e 100644
--- a/src/ephy-find-toolbar.c
+++ b/src/ephy-find-toolbar.c
@@ -501,6 +501,9 @@ case_sensitive_toggled_cb (GtkWidget *check,
 			(proxy, G_CALLBACK (case_sensitive_menu_toggled_cb), toolbar);
 	}
 
+	if (gtk_entry_get_text_length (GTK_ENTRY (toolbar->priv->entry)) == 0)
+		return;
+
 #ifdef HAVE_WEBKIT2
         do_search (toolbar);
 #else