make-gcc-happy variable-may-be-uninitialized (but-is-not) commit

Change-Id: If214d3bce7fd23e2c30b6b9bc1bfec2e9fff3958
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

qmake/generators/win32/msvc_objectmodel.cpp

@@ -2861,7 +2861,7 @@ void VCProjectWriter::outputFilter(VCProject &project, XmlOutput &xml, const QSt
         root = new TreeNode;
 
     QString name, extfilter, guid;
-    triState parse;
+    triState parse = unset;
 
     for (int i = 0; i < project.SingleProjects.count(); ++i) {
         VCFilter filter;