Fixed crash on shutdown of RetroShare, when the cache loading is running.

Now the p3distrib threads are stopped before the instance of AuthGPG is deleted.

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@4119 b45a01b8-16f6-495d-af2f-9b41ad6348cc

libretroshare/src/rsserver/p3face-config.cc

@@ -180,5 +180,15 @@ void RsServer::rsGlobalShutDown()
 	join();
 	ftserver->StopThreads();
 
+	// stop the p3distrib threads
+#ifndef MINIMAL_LIBRS
+	mForums->join();
+	mChannels->join();
+
+#ifdef RS_USE_BLOGS
+	mBlogs->join();
+#endif
+#endif // MINIMAL_LIBRS
+
 	AuthGPGExit();
 }