aout: Delete local reference even if global referencing failed

http://java.sun.com/docs/books/jni/html/refs.html

vlc-android/jni/aout.c

@@ -89,15 +89,14 @@ int aout_open(void **opaque, char *format, unsigned *rate, unsigned *nb_channels
     /* Use a global reference to not reallocate memory each time we run
        the play function. */
     p_sys->buffer = (*p_env)->NewGlobalRef (p_env, buffer);
+    /* The local reference is no longer useful. */
+    (*p_env)->DeleteLocalRef (p_env, buffer);
     if (p_sys->buffer == NULL)
     {
         LOGE ("Couldn't create the global reference!");
         goto error;
     }
 
-    /* The local reference is no longer useful. */
-    (*p_env)->DeleteLocalRef (p_env, buffer);
-
     // Get the play methodId
     p_sys->play = (*p_env)->GetMethodID (p_env, cls, "playAudio", "([BI)V");
     assert (p_sys->play != NULL);