Add flag to IPlugin::aboutToShutdown that allows asynchronous shutdown.

If a plugin requests asyncronous shutdown, the shutdown sequence does
not continue to deleting the plugins before it has sent a
asynchronousShutdownFinished signal. During that time an event loop
is running.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/plugins/find/findplugin.cpp b/src/plugins/find/findplugin.cpp
index 7e1e14669a..96e68705dd 100644
--- a/src/plugins/find/findplugin.cpp
+++ b/src/plugins/find/findplugin.cpp
@@ -143,12 +143,13 @@ void FindPlugin::extensionsInitialized()
     readSettings();
 }
 
-void FindPlugin::aboutToShutdown()
+ExtensionSystem::IPlugin::ShutdownFlag FindPlugin::aboutToShutdown()
 {
     d->m_findToolBar->setVisible(false);
     d->m_findToolBar->setParent(0);
     d->m_currentDocumentFind->removeConnections();
     writeSettings();
+    return SynchronousShutdown;
 }
 
 void FindPlugin::filterChanged()