Fix position when restoring streaming audio track

Bug: 19802225
Change-Id: I19ca7836bc89627f6cead4961641b94c6b27b5f6
diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index c775e7b..2f7055f 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -1857,7 +1857,7 @@
     // For streaming tracks, this is the amount we obtained from the user/client
     // (not the number actually consumed at the server - those are already lost).
     (void) updateAndGetPosition_l();
-    if (mStaticProxy != 0) {
+    if (mStaticProxy == 0) {
         mPosition = mReleased;
     }