Fix facing check in CameraUtils

One of the checks in CameraUtils::getRotationTransform
checked the wrong variable.

Change-Id: I365c1cf48d6b71468712da75c4499e00337b02d4
diff --git a/camera/CameraUtils.cpp b/camera/CameraUtils.cpp
index 04244ac..5cd2717 100644
--- a/camera/CameraUtils.cpp
+++ b/camera/CameraUtils.cpp
@@ -44,7 +44,7 @@
     }
 
     camera_metadata_ro_entry_t entryFacing = staticInfo.find(ANDROID_LENS_FACING);
-    if (entry.count == 0) {
+    if (entryFacing.count == 0) {
         ALOGE("%s: Can't find android.lens.facing in static metadata!", __FUNCTION__);
         return INVALID_OPERATION;
     }