Do not enable filmstrip swipe during recording.

When user initiates zoom UI during recording, hide call was made on
pie menu. Pie menu hide enables swipe. Hence if user does zoom
while recording swiping was getting enabled.
During recording pie menu will be hidden so do not call pie menu
hide during recording.

Change-Id: Ic92759090f36dab55d0f80fa5cf52446cee15cc9
CRs-Fixed: 564670
diff --git a/src/com/android/camera/VideoUI.java b/src/com/android/camera/VideoUI.java
index f6027a3..7547bdd 100644
--- a/src/com/android/camera/VideoUI.java
+++ b/src/com/android/camera/VideoUI.java
@@ -743,7 +743,7 @@
         @Override
         public void onZoomStart() {
             if (mPieRenderer != null) {
-                mPieRenderer.hide();
+                if (!mRecordingStarted) mPieRenderer.hide();
                 mPieRenderer.setBlockFocus(true);
             }
         }