Fix call buttons being incorrectly hidden.

They were hidden incorrectly when having full-screen caller photo
enabled and an outgoing call is terminated without being answered.

Change-Id: I817a1f8d37c83aabb5470ee1ed6329b79302d338
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_InCallUI into android-4.4