Debugger: Replace newline with space in status message

Just removing newlines produces strange messages like:
"Cannot access memory at 0x1a2a3948Continuing nevertheless"

Change-Id: Ifca25bc14f4c10fc560066172f555a6f475af375
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/debugger/debuggerplugin.cpp

@@ -2164,7 +2164,7 @@ void DebuggerPluginPrivate::showStatusMessage(const QString &msg0, int timeout)
 {
     showMessage(msg0, LogStatus);
     QString msg = msg0;
-    msg.remove(QLatin1Char('\n'));
+    msg.replace(QChar::LineFeed, QChar::Space);
     m_statusLabel->showStatusMessage(msg, timeout);
 }