Fix NPE when dragging shortcut without component while app is uninstalled

issue 14601562

Change-Id: Icf0472d38c1b02de8421f146e26f2e2d79de43dd
diff --git a/src/com/android/launcher3/DragController.java b/src/com/android/launcher3/DragController.java
index 4c3ea2a..6d0a2be 100644
--- a/src/com/android/launcher3/DragController.java
+++ b/src/com/android/launcher3/DragController.java
@@ -329,8 +329,8 @@
                     if (dragInfo != null &&
                             dragInfo.intent != null && info != null) {
                         ComponentName cn = dragInfo.intent.getComponent();
-                        boolean isSameComponent = cn.equals(info.componentName) ||
-                                packageNames.contains(cn.getPackageName());
+                        boolean isSameComponent = cn != null && (cn.equals(info.componentName) ||
+                                packageNames.contains(cn.getPackageName()));
                         if (isSameComponent) {
                             cancelDrag();
                             return;