QSqlResult: note in doc about misnamed method

Change-Id: I488a915622445527c529b35db639ec3b6e887d1d
Reviewed-by: Israel Lins Albuquerque <israelins85@yahoo.com.br>
Reviewed-by: Mark Brand <mabrand@mabrand.nl>

src/sql/kernel/qsqlresult.cpp

@@ -584,6 +584,8 @@ void QSqlResult::setForwardOnly(bool forward)
     functionality where possible. Returns true if the query is
     prepared successfully; otherwise returns false.
 
+    Note: This method should have been called "safePrepare()".
+
     \sa prepare()
 */
 bool QSqlResult::savePrepare(const QString& query)