Fix a small build warning.

Change-Id: I2b228db8f11a829399cdc6efe67d7b6e0a1917ba
diff --git a/media/libstagefright/timedtext/TimedTextPlayer.cpp b/media/libstagefright/timedtext/TimedTextPlayer.cpp
index df7eb39..e3bdd8a 100644
--- a/media/libstagefright/timedtext/TimedTextPlayer.cpp
+++ b/media/libstagefright/timedtext/TimedTextPlayer.cpp
@@ -261,7 +261,8 @@
     sp<MediaPlayerBase> listener = mListener.promote();
     if (listener == NULL) {
         // TODO: it may be better to return kInvalidTimeUs
-        ALOGE("%s: Listener is NULL.", __FUNCTION__, fireTimeUs);
+        ALOGE("%s: Listener is NULL. (fireTimeUs = %lld)",
+              __FUNCTION__, fireTimeUs);
         return 0;
     }
     int32_t positionMs = 0;