Mercurial: Make commiter/commiter email work again

We tried to get the data from a settings object that was removed
elsewhere:-/

Task-number: QTCREATORBUG-14945
Change-Id: Ib7c1b9ced0cae776f24f250ebda24bcf14d3a782
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

src/plugins/mercurial/mercurialplugin.cpp

@@ -560,8 +560,8 @@ void MercurialPlugin::showCommitWidget(const QList<VcsBaseClient::StatusItem> &s
 
     QString branch = versionControl()->vcsTopic(m_submitRepository);
     commitEditor->setFields(m_submitRepository, branch,
-                            mercurialSettings.stringValue(MercurialSettings::userNameKey),
-                            mercurialSettings.stringValue(MercurialSettings::userEmailKey), status);
+                            m_client->settings().stringValue(MercurialSettings::userNameKey),
+                            m_client->settings().stringValue(MercurialSettings::userEmailKey), status);
 }
 
 void MercurialPlugin::diffFromEditorSelected(const QStringList &files)

src/plugins/mercurial/mercurialplugin.h

@@ -135,7 +135,6 @@ private:
 
     // Variables
     static MercurialPlugin *m_instance;
-    MercurialSettings mercurialSettings;
     OptionsPage *optionsPage;
     MercurialClient *m_client;