Fix issue 5090721: audio record broken

Commit 6dbdc40 introduced a deadlock when exiting the
AudioFlinger RecordThread.

Change-Id: I1f63e54c5aeff05da4e4d028b53f734c62c78677
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 4e068b2..ec45530 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -1100,7 +1100,7 @@
 void AudioFlinger::ThreadBase::releaseWakeLock()
 {
     Mutex::Autolock _l(mLock);
-    releaseWakeLock();
+    releaseWakeLock_l();
 }
 
 void AudioFlinger::ThreadBase::releaseWakeLock_l()