hob: fix backtrace when dismissing open dialog

Clearly a logic/indentation error - we should only try and load the recipe
should the file-chooser return OK.

Fixes [YOCTO #1668]

(Bitbake rev: db59297aa1861614ffaea4295b9b054baa8a12b9)

Signed-off-by: Joshua Lock <josh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/ui/hob.py

@@ -400,9 +400,9 @@ class MainWindow (gtk.Window):
         if response == gtk.RESPONSE_OK:
             rep.loadRecipe(recipe)
             self.save_path = recipe
+            self.model.load_image_rep(rep)
+            self.dirty = False
         chooser.destroy()
-        self.model.load_image_rep(rep)
-        self.dirty = False
 
     def bake_clicked_cb(self, button):
         build_image = True