Logs a warning instead of throwing IllegalStateException. wocommunity…

…#784

stop() is called when ApplicationWillTerminateNotification is
posted. If _queueThread is null or not alive, throwing an
IllegalStateException here just prevents the application from
terminating.

Frameworks/Core/ERExtensions/Sources/er/extensions/eof/ERXObjectStoreCoordinatorSynchronizer.java

@@ -634,7 +634,7 @@ public void stop() {
 				_queueThread.interrupt();
 			}
 			else {
-				throw new IllegalStateException("Attempted to stop the " + getClass().getSimpleName() + " when it wasn't already running");
+				log.warn("Attempted to stop the " + getClass().getSimpleName() + " when it wasn't already running");
 			}
 		}
 	}