Fix a subtle memory leak.

research/miniaudio_engine.h

@@ -7040,7 +7040,7 @@ early_exit:
         } else {
             /* Loading asynchronously. We may need to wait for initialization. */
             if ((flags & MA_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
-                ma_resource_manager_inline_notification_wait_and_uninit(&initNotification);
+                ma_resource_manager_inline_notification_wait(&initNotification);
             }
         }
     }
@@ -7054,6 +7054,10 @@ done:
         }
     }
 
+    if ((flags & MA_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
+        ma_resource_manager_inline_notification_uninit(&initNotification);
+    }
+
     *ppDataBufferNode = pDataBufferNode;
 
     return result;