Fixed the screen freeze issue for any frame with only FBT layer. am: b4a718c0d8
am: 4e326a4e05

Change-Id: I345be17706391e7e0a1537d812017d97a9945f25
diff --git a/moorefield_hdmi/ips/tangier/TngDisplayContext.cpp b/moorefield_hdmi/ips/tangier/TngDisplayContext.cpp
index 789d80f..5cf9968 100755
--- a/moorefield_hdmi/ips/tangier/TngDisplayContext.cpp
+++ b/moorefield_hdmi/ips/tangier/TngDisplayContext.cpp
@@ -147,7 +147,7 @@
 
     VLOGTRACE("count = %d", mCount);
 
-    if (mIMGDisplayDevice && mCount) {
+    if (mIMGDisplayDevice) {
         int err = mIMGDisplayDevice->post(mIMGDisplayDevice,
                                           mImgLayers,
                                           mCount,