[gedit-code-assistance] Fix potential crash in gca-diagnostic-message get_preferred_height()

[Elad Alfassa <eladalfassa src gnome org>]

commit a44cf7f9b6dc23ba274d070b758924684f24ae0d
Author: Elad Alfassa <elad fedoraproject org>
Date:   Fri Sep 5 18:00:00 2014 +0300

    Fix potential crash in gca-diagnostic-message get_preferred_height()

 src/gca-diagnostic-message.vala |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/gca-diagnostic-message.vala b/src/gca-diagnostic-message.vala
index 82a4bf0..89e9d3f 100644
--- a/src/gca-diagnostic-message.vala
+++ b/src/gca-diagnostic-message.vala
@@ -377,8 +377,9 @@ class DiagnosticMessage : EventBox
                                                     out int natural_height)
        {
                int minwidth;
+               int natwidth;
 
-               get_preferred_width(out minwidth, null);
+               get_preferred_width(out minwidth, out natwidth);
                get_preferred_height_for_width(minwidth, out minimum_height, out natural_height);
        }