Use indexed getToken()

Change-Id: Iefbcb9c87a77264fa31b8554c122454dc1a88ead
Reviewed-on: https://gerrit.libreoffice.org/67308
Tested-by: Jenkins
Reviewed-by: Matteo Casalin <matteo.casalin@yahoo.com>

sw/source/uibase/app/apphdl.cxx

@@ -287,9 +287,10 @@ std::shared_ptr<SwMailMergeConfigItem> SwView::EnsureMailMergeConfigItem(const S
             {
                 OUString sDBName(aDBNameList[0]);
                 SwDBData aDBData;
-                aDBData.sDataSource = sDBName.getToken(0, DB_DELIM);
-                aDBData.sCommand = sDBName.getToken(1, DB_DELIM);
-                aDBData.nCommandType = sDBName.getToken(2, DB_DELIM).toInt32();
+                sal_Int32 nIdx{ 0 };
+                aDBData.sDataSource = sDBName.getToken(0, DB_DELIM, nIdx);
+                aDBData.sCommand = sDBName.getToken(0, DB_DELIM, nIdx);
+                aDBData.nCommandType = sDBName.getToken(0, DB_DELIM, nIdx).toInt32();
                 //set the currently used database for the wizard
                 xMMConfig->SetCurrentDBData(aDBData);
             }