Fix logical XOR

The '^' is the bitwise XOR, we should use logical XOR in
these contexts. The operator!=() should serve for it.

More info and reasoning:
https://stackoverflow.com/questions/24542

Change-Id: I1bd70bdcab25455f409594f0f14c209d1de11d18
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/fakevim/fakevimhandler.cpp

@@ -6519,7 +6519,7 @@ bool FakeVimHandler::Private::handleExMultiRepeatCommand(const ExCommand &cmd)
         const Range range(pos, pos, RangeLineMode);
         const QString lineContents = selectText(range);
         const QRegularExpressionMatch match = re.match(lineContents);
-        if (match.hasMatch() ^ negates) {
+        if (match.hasMatch() != negates) {
             QTextCursor tc(document());
             tc.setPosition(pos);
             matches.append(tc);