am fbdf4270: Fix inability to long press page indicators (issue 11136731)

* commit 'fbdf42703c02f27105e67776a022db2c080dd5db':
  Fix inability to long press page indicators (issue 11136731)
diff --git a/src/com/android/launcher3/PagedView.java b/src/com/android/launcher3/PagedView.java
index b209436..c6cf3a3 100644
--- a/src/com/android/launcher3/PagedView.java
+++ b/src/com/android/launcher3/PagedView.java
@@ -350,7 +350,11 @@
             }
 
             mPageIndicator.addMarkers(markers, mAllowPagedViewAnimations);
-            mPageIndicator.setOnClickListener(getPageIndicatorClickListener());
+
+            OnClickListener listener = getPageIndicatorClickListener();
+            if (listener != null) {
+                mPageIndicator.setOnClickListener(listener);
+            }
             mPageIndicator.setContentDescription(getPageIndicatorDescription());
         }
     }