FM: Use correct object to notify event

Because of incorrect object used to notify, application is crashing.
Using correct object to notify to prevent crash.

Change-Id: I5f086f6a87985068d889e63b3bd5e6e77d17adf3
diff --git a/fmapp2/src/com/caf/fmradio/FMStats.java b/fmapp2/src/com/caf/fmradio/FMStats.java
index 1c506c4..ada08ec 100644
--- a/fmapp2/src/com/caf/fmradio/FMStats.java
+++ b/fmapp2/src/com/caf/fmradio/FMStats.java
@@ -486,7 +486,7 @@
                     }
                     if (mRunTestThread !=  null) {
                         synchronized (obj) {
-                            mRunTestThread.notify();
+                            obj.notify();
                         }
                     }
                     break;