Use toStdString() directly

lib/collectionquery.cpp

@@ -80,7 +80,7 @@ ResultIterator CollectionQuery::exec()
 {
     Xapian::Database db;
     try {
-        db = Xapian::Database(QFile::encodeName(d->databaseDir).constData());
+        db = Xapian::Database(QFile::encodeName(d->databaseDir).toStdString());
     } catch (const Xapian::DatabaseError &e) {
         qCWarning(AKONADI_SEARCH_PIM_LOG) << "Failed to open Xapian database:" << d->databaseDir
                    << "; error:" << QString::fromStdString(e.get_error_string());

lib/contactcompleter.cpp

@@ -75,7 +75,7 @@ QStringList ContactCompleter::complete()
     const QString dir = Query::defaultLocation(QStringLiteral("emailContacts"));
     Xapian::Database db;
     try {
-        db = Xapian::Database(QFile::encodeName(dir).constData());
+        db = Xapian::Database(QFile::encodeName(dir).toStdString());
     } catch (const Xapian::DatabaseOpeningError &) {
         qCWarning(AKONADI_SEARCH_PIM_LOG) << "Xapian Database does not exist at " << dir;
         return QStringList();

lib/contactquery.cpp

@@ -95,7 +95,7 @@ ResultIterator ContactQuery::exec()
     Xapian::Database db;
 
     try {
-        db = Xapian::Database(QFile::encodeName(dir).constData());
+        db = Xapian::Database(QFile::encodeName(dir).toStdString());
     } catch (const Xapian::DatabaseOpeningError &) {
         qCWarning(AKONADI_SEARCH_PIM_LOG) << "Xapian Database does not exist at " << dir;
         return ResultIterator();

lib/emailquery.cpp

@@ -178,7 +178,7 @@ ResultIterator EmailQuery::exec()
     const QString dir = defaultLocation(QStringLiteral("email"));
     Xapian::Database db;
     try {
-        db = Xapian::Database(QFile::encodeName(dir).constData());
+        db = Xapian::Database(QFile::encodeName(dir).toStdString());
     } catch (const Xapian::DatabaseOpeningError &) {
         qCWarning(AKONADI_SEARCH_PIM_LOG) << "Xapian Database does not exist at " << dir;
         return ResultIterator();

lib/indexeditems.cpp

@@ -115,7 +115,7 @@ qlonglong IndexedItemsPrivate::indexedItemsInDatabase(const std::string &term, c
 {
     Xapian::Database db;
     try {
-        db = Xapian::Database(QFile::encodeName(dbPath).constData());
+        db = Xapian::Database(QFile::encodeName(dbPath).toStdString());
     } catch (const Xapian::DatabaseError &e) {
         qCCritical(AKONADI_SEARCH_PIM_LOG) << "Failed to open database" << dbPath << ":" << QString::fromStdString(e.get_msg());
         return 0;

lib/notequery.cpp

@@ -68,7 +68,7 @@ ResultIterator NoteQuery::exec()
 
     Xapian::Database db;
     try {
-        db = Xapian::Database(QFile::encodeName(dir).constData());
+        db = Xapian::Database(QFile::encodeName(dir).toStdString());
     } catch (const Xapian::DatabaseOpeningError &) {
         qCWarning(AKONADI_SEARCH_PIM_LOG) << "Xapian Database does not exist at " << dir;
         return ResultIterator();