--- a/tools/assistant/lib/qhelpdbreader.cpp	Fri Feb 19 23:40:16 2010 +0200
+++ b/tools/assistant/lib/qhelpdbreader.cpp	Fri Mar 12 15:46:37 2010 +0200
@@ -515,7 +515,7 @@
 QString QHelpDBReader::mergeList(const QStringList &list) const
 {
     QString str;
-    foreach (QString s, list)
+    foreach (const QString &s, list)
         str.append(QLatin1Char('\'') + quote(s) + QLatin1String("\', "));
     if (str.endsWith(QLatin1String(", ")))
         str = str.left(str.length()-2);
@@ -567,14 +567,14 @@
 
     bool needUpdate = !m_viewAttributes.count();
 
-    foreach (QString s, attributes)
+    foreach (const QString &s, attributes)
         m_viewAttributes.remove(s);
 
     if (m_viewAttributes.count() || needUpdate) {
         m_viewAttributes.clear();
         m_indicesCache = indexIds;        
     }
-    foreach (QString s, attributes)
+    foreach (const QString &s, attributes)
         m_viewAttributes.insert(s);
     m_useAttributesCache = true;
     return true;