Compile fix with recent Qt dev

The reasoning in 1b4766e26c did not take into account that the scope
of QT_NO_JAVA_STYLE_ITERATORS may change over time, as done with
f70905448f6 in Qt base.

Change-Id: Ib1966ff26c4d36d5f62e149d6b45baa4aecf825d
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/cpptools/builtincursorinfo.cpp

@@ -205,9 +205,7 @@ private:
 
         LookupContext context(m_document, m_snapshot);
 
-        CppTools::SemanticInfo::LocalUseIterator it(uses);
-        while (it.hasNext()) {
-            it.next();
+        for (auto it = uses.cbegin(), end = uses.cend(); it != end; ++it) {
             const SemanticUses &uses = it.value();
 
             bool good = false;