Fix ClassCastException due to typo

issue 19159790

Change-Id: I5f9fa0e3672c10a460606dcb13b158bd4e614813
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index 7b5f846..9f97631 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -3859,7 +3859,7 @@
                 labelB = mLabelCache.get(b);
             } else {
                 labelB = (b instanceof LauncherAppWidgetProviderInfo)
-                        ? mManager.loadLabel((LauncherAppWidgetProviderInfo) a)
+                        ? mManager.loadLabel((LauncherAppWidgetProviderInfo) b)
                         : ((ResolveInfo) b).loadLabel(mPackageManager).toString().trim();
                 mLabelCache.put(b, labelB);
             }