Fix a deadlock in commandSetVideoBufferCountL()

o The lock to be acquired in recordingEnabled() has aleady been acquired in sendCommand()
  before the call to commandSetVideoBufferCountL().

Change-Id: I664d51ef449c9eb3576d5d56f73f29c98444ff3f
diff --git a/services/camera/libcameraservice/Camera2Client.h b/services/camera/libcameraservice/Camera2Client.h
index 2e6a36c..8c10d6b 100644
--- a/services/camera/libcameraservice/Camera2Client.h
+++ b/services/camera/libcameraservice/Camera2Client.h
@@ -108,6 +108,8 @@
     void stopPreviewL();
     status_t startPreviewL();
 
+    bool recordingEnabledL();
+
     // Individual commands for sendCommand()
     status_t commandStartSmoothZoomL();
     status_t commandStopSmoothZoomL();