Fix clear call log option in overflow menu

Bug: 10895974
Change-Id: I4259602709705665aefddba38784667faa6d50aa
diff --git a/src/com/android/dialer/calllog/CallLogActivity.java b/src/com/android/dialer/calllog/CallLogActivity.java
index c343a7c..42318f0 100644
--- a/src/com/android/dialer/calllog/CallLogActivity.java
+++ b/src/com/android/dialer/calllog/CallLogActivity.java
@@ -157,7 +157,7 @@
         // If onPrepareOptionsMenu is called before fragments loaded. Don't do anything.
         if (mAllCallsFragment != null && itemDeleteAll != null) {
             final CallLogAdapter adapter = mAllCallsFragment.getAdapter();
-            itemDeleteAll.setEnabled(adapter != null && !adapter.isEmpty());
+            itemDeleteAll.setVisible(adapter != null && !adapter.isEmpty());
         }
         return true;
     }