fix(notification): hide snore warning log spam

snorenotify logs this when we call requestCloseNotification correctly. The
behaviour still works, so we can just mask the warning for now. The issue has
been reported upstream:
https://github.com/qTox/qTox/pull/6073#pullrequestreview-420748519

src/main.cpp

@@ -98,6 +98,16 @@ void logMessageHandler(QtMsgType type, const QMessageLogContext& ctxt, const QSt
         && msg == QString("QFSFileEngine::open: No file name specified"))
         return;
 
+    QRegExp snoreFilter{QStringLiteral("Snore::Notification.*was already closed")};
+    if (type == QtWarningMsg
+        && msg.contains(snoreFilter))
+    {
+        // snorenotify logs this when we call requestCloseNotification correctly. The behaviour still works, so we'll
+        // just mask the warning for now. The issue has been reported upstream:
+        // https://github.com/qTox/qTox/pull/6073#pullrequestreview-420748519
+        return;
+    }
+
     QString file = ctxt.file;
     // We're not using QT_MESSAGELOG_FILE here, because that can be 0, NULL, or
     // nullptr in release builds.