adapt code to LRC API change

LRC API (Singleton's implementation) has changed.
This patch adapats the code to these changes.
Moslty changes deferencement '->' for direct access '.'

Tuleap: #44
Change-Id: Ic87b1306a1239fdb8a6af0affe1ecbc1d16f609c
diff --git a/src/choosecontactview.cpp b/src/choosecontactview.cpp
index 0259112..4d5a7bd 100644
--- a/src/choosecontactview.cpp
+++ b/src/choosecontactview.cpp
@@ -137,8 +137,8 @@
 
     ChooseContactViewPrivate *priv = CHOOSE_CONTACT_VIEW_GET_PRIVATE(self);
 
-    priv->sorted_contacts = new QSortFilterProxyModel(PersonModel::instance());
-    priv->sorted_contacts->setSourceModel(PersonModel::instance());
+    priv->sorted_contacts = new QSortFilterProxyModel(&PersonModel::instance());
+    priv->sorted_contacts->setSourceModel(&PersonModel::instance());
     priv->sorted_contacts->setSortCaseSensitivity(Qt::CaseInsensitive);
     priv->sorted_contacts->sort(0);