Fix silent DB upgrade abort

normalizeIcons() was missing a call to setTransactionSuccessful(),
which made the entire DB upgrade silently rollback. So the
DB version was stuck at 6 after an upgrade from Eclair to Froyo.
The only visible effect in the default config was that the search
widget disappeared.

Fixes http://b/issue?id=2451146

Change-Id: I257964e5958286e9819bb5e7b108a261cfabf9b3
diff --git a/src/com/android/launcher2/LauncherProvider.java b/src/com/android/launcher2/LauncherProvider.java
index 457f2f7..24b877b 100644
--- a/src/com/android/launcher2/LauncherProvider.java
+++ b/src/com/android/launcher2/LauncherProvider.java
@@ -521,6 +521,7 @@
                         logged = true;
                     }
                 }
+                db.setTransactionSuccessful();
             } catch (SQLException ex) {
                 Log.w(TAG, "Problem while allocating appWidgetIds for existing widgets", ex);
             } finally {