bug 1030738 - NullPointerException when getting action bar r=rnewman

mobile/android/base/preferences/GeckoPreferenceFragment.java

@@ -122,7 +122,9 @@ public class GeckoPreferenceFragment extends PreferenceFragment {
 
         if (Build.VERSION.SDK_INT >= 14) {
             final ActionBar actionBar = activity.getActionBar();
-            actionBar.setTitle(newTitle);
+            if (actionBar != null) {
+                actionBar.setTitle(newTitle);
+            }
         }
     }
 

mobile/android/base/preferences/GeckoPreferences.java

@@ -140,7 +140,9 @@ OnSharedPreferenceChangeListener
                 Log.v(LOGTAG, "Setting action bar title to " + newTitle);
 
                 final ActionBar actionBar = getActionBar();
-                actionBar.setTitle(newTitle);
+                if (actionBar != null) {
+                    actionBar.setTitle(newTitle);
+                }
             }
         }
     }
@@ -360,7 +362,9 @@ OnSharedPreferenceChangeListener
 
         if (Build.VERSION.SDK_INT >= 14) {
             final ActionBar actionBar = getActionBar();
-            actionBar.setHomeButtonEnabled(true);
+            if (actionBar != null) {
+                actionBar.setHomeButtonEnabled(true);
+            }
         }
 
         // N.B., if we ever need to redisplay the locale selection UI without