Fix qHash-related size compatibility warnings by MSVC

Change-Id: I3b7981ce78b67db4b996f99682284a0b911d8cd7
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/fakevim/fakevimhandler.cpp

@@ -1285,7 +1285,7 @@ public:
             << quoteUnprintable(m_text);
     }
 
-    friend uint qHash(const Input &i)
+    friend auto qHash(const Input &i)
     {
         return ::qHash(i.m_key);
     }