Fix NPE for video card when VT not active

Change-Id: I5a88be1a3d463fd2570b98144f9caa626c8dc3bb
diff --git a/src/com/android/incallui/CallCardFragment.java b/src/com/android/incallui/CallCardFragment.java
index 2acabd6..499f464 100644
--- a/src/com/android/incallui/CallCardFragment.java
+++ b/src/com/android/incallui/CallCardFragment.java
@@ -311,6 +311,9 @@
 
         // Retrieve here since at fragment creation time the incoming video view is not inflated.
         final View videoView = getView().findViewById(R.id.incomingVideo);
+        if (videoView == null) {
+            return;
+        }
 
         // Determine how much space there is below or to the side of the call card.
         final float spaceBesideCallCard = getSpaceBesideCallCard();