camera: Fix memory leak in HDR mode

The hdr YUV buffer counter should be incremented for every YUV
callback received.

b/18429991 Camera: ~40 MB memory leak per capture on N4 when using HDR mode

Change-Id: If90c931ebc9e87984bbe4b1d6f7934fd7f5daab9
Signed-off-by: Iliyan Malchev <malchev@google.com>
diff --git a/camera/QCameraHWI_Still.cpp b/camera/QCameraHWI_Still.cpp
index 34d8765..d3fe706 100755
--- a/camera/QCameraHWI_Still.cpp
+++ b/camera/QCameraHWI_Still.cpp
@@ -2092,12 +2092,10 @@
 
         if(mHalCamCtrl->mHdrMode == HDR_MODE) {
             if ((hdrRawCount % 3) != 2) {
+                hdrRawCount++;
                 mStopCallbackLock.unlock();
                 return NO_ERROR;
             }
-            else {
-                hdrRawCount++;
-            }
         }
 
         if (rc != NO_ERROR)