MacGUI: Fix a crash that happens when the Preview window backingScaleFactor changes but the title is not set.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5344 b64f7644-9d1e-0410-96f1-a4d463321fa5

1 files changed, 2 insertions, 1 deletions

diff --git a/macosx/HBPreviewController.m b/macosx/HBPreviewController.m
index 5214cf0ea..aaf6ec36c 100644
--- a/macosx/HBPreviewController.m
+++ b/macosx/HBPreviewController.m
@@ -247,7 +247,8 @@
         // Scale factor changed, update the preview window
         // to the new situation
         backingScaleFactor = newBackingScaleFactor;
-        [self pictureSliderChanged:self];
+        if (fTitle)
+            [self pictureSliderChanged:self];
     }
 }