QtBase: replace 0 with \nullptr in documentation

Replace 0 with \nullptr in the documentation.
As a drive-by also replace some 0 with nullptr in the corresponding
code.

Change-Id: I914b6b2151554c06acc2d244eff004524cbb9a82
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 5 insertions, 5 deletions

diff --git a/src/sql/models/qsqlrelationaltablemodel.cpp b/src/sql/models/qsqlrelationaltablemodel.cpp
index 1f590c4ab2..34be010474 100644
--- a/src/sql/models/qsqlrelationaltablemodel.cpp
+++ b/src/sql/models/qsqlrelationaltablemodel.cpp
@@ -626,8 +626,8 @@ QString QSqlRelationalTableModel::selectStatement() const
 
 /*!
     Returns a QSqlTableModel object for accessing the table for which
-    \a column is a foreign key, or 0 if there is no relation for the
-    given \a column.
+    \a column is a foreign key, or \nullptr if there is no relation for
+    the given \a column.
 
     The returned object is owned by the QSqlRelationalTableModel.
 
@@ -636,12 +636,12 @@ QString QSqlRelationalTableModel::selectStatement() const
 QSqlTableModel *QSqlRelationalTableModel::relationModel(int column) const
 {
     Q_D(const QSqlRelationalTableModel);
-    if ( column < 0 || column >= d->relations.count())
-        return 0;
+    if (column < 0 || column >= d->relations.count())
+        return nullptr;
 
     QRelation &relation = const_cast<QSqlRelationalTableModelPrivate *>(d)->relations[column];
     if (!relation.isValid())
-        return 0;
+        return nullptr;
 
     if (!relation.model)
         relation.populateModel();