From 8dd026e4f91f802719315fb6b5a45e36723d3adc Mon Sep 17 00:00:00 2001
From: Andreas Haas <liu.gam3@gmail.com>
Date: Wed, 5 Oct 2016 08:56:58 +0200
Subject: [PATCH] Prevent crash on focus change when no valid next control has
 been found.

Fixes the crash discussed in #6714.
---
 scene/gui/control.cpp | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/scene/gui/control.cpp b/scene/gui/control.cpp
index a5bee32a69d..97f0db97c2c 100644
--- a/scene/gui/control.cpp
+++ b/scene/gui/control.cpp
@@ -1725,11 +1725,11 @@ Control *Control::find_next_valid_focus() const {
 
 		if (next_child==this) // no next control->
 			return (get_focus_mode()==FOCUS_ALL)?next_child:NULL;
-
-		if (next_child->get_focus_mode()==FOCUS_ALL)
-			return next_child;
-
-		from = next_child;
+		if (next_child) {
+			if (next_child->get_focus_mode()==FOCUS_ALL)
+				return next_child;
+			from = next_child;
+		} else break;
 	}
 
 	return NULL;