Replace QLatin1String("x") with QLatin1Char('x') where possible

Change-Id: I2f90c8ae7b5e968b9de882833f8661ab540a9232
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/debugger/stackframe.cpp

@@ -123,7 +123,7 @@ QString StackFrame::toToolTip() const
         showDistributionNote = true;
     }
     if (!Utils::HostOsInfo::isWindowsHost() && showDistributionNote) {
-        str << QLatin1String(" ") <<
+        str << QLatin1Char(' ') <<
                tr("Note that most distributions ship debug information "
                   "in separate packages.");
     }