ItemInfo null check inside BaseDraggingActivity

Bug: 153611516
Change-Id: I0b9fed9134a103e3f7162756fd91ea4ad89e09bb
diff --git a/src/com/android/launcher3/BaseDraggingActivity.java b/src/com/android/launcher3/BaseDraggingActivity.java
index 2dc7836..cb353ae 100644
--- a/src/com/android/launcher3/BaseDraggingActivity.java
+++ b/src/com/android/launcher3/BaseDraggingActivity.java
@@ -184,7 +184,9 @@
                         sourceContainer);
             }
             getUserEventDispatcher().logAppLaunch(v, intent, user);
-            getStatsLogManager().log(APP_LAUNCH_TAP, item.buildProto(null, null));
+
+            getStatsLogManager().log(APP_LAUNCH_TAP, item == null ? null
+                    : item.buildProto(null, null));
             return true;
         } catch (NullPointerException|ActivityNotFoundException|SecurityException e) {
             Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();