Fix for regression which made issue 14491953 occur more easily

Change-Id: I27711aad8aae2824a54a043f686918d342ffc5bb
(cherry picked from commit 327acfea13)

src/com/android/launcher3/Launcher.java

@@ -2890,6 +2890,8 @@ public class Launcher extends Activity
                 } else {
                     return false;
                 }
+            } else {
+                return false;
             }
         }
 
@@ -2911,7 +2913,6 @@ public class Launcher extends Activity
                 // User long pressed on empty space
                 mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
                         HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
-                // Disabling reordering until we sort out some issues.
                 if (mWorkspace.isInOverviewMode()) {
                     mWorkspace.startReordering(v);
                 } else {

src/com/android/launcher3/PagedView.java

@@ -2482,7 +2482,7 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
     public boolean startReordering(View v) {
         int dragViewIndex = indexOfChild(v);
 
-        if (mTouchState != TOUCH_STATE_REST) return false;
+        if (mTouchState != TOUCH_STATE_REST || dragViewIndex == -1) return false;
 
         mTempVisiblePagesRange[0] = 0;
         mTempVisiblePagesRange[1] = getPageCount() - 1;