utils: add ESource* argument to ask-recurrence-modification-type

Earlier the argument was ESource. Changed
the argument to ESource* for the function
to correctly fetch "client" data from the
source.

https://bugzilla.gnome.org/show_bug.cgi?id=782755

src/gcal-utils.c

@@ -1169,7 +1169,7 @@ is_source_enabled (ESource *source)
 gboolean
 ask_recurrence_modification_type (GtkWidget      *parent,
                                   ECalObjModType *modtype,
-                                  ESource         source)
+                                  ESource        *source)
 {
   GtkWidget *dialog;
   GtkDialogFlags flags;
@@ -1193,7 +1193,7 @@ ask_recurrence_modification_type (GtkWidget      *parent,
                           GTK_RESPONSE_ACCEPT,
                           NULL);
 
-  client = g_object_get_data (G_OBJECT (&source), "client");
+  client = g_object_get_data (G_OBJECT (source), "client");
 
   if (!e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_THISANDFUTURE))
     gtk_dialog_add_button (GTK_DIALOG (dialog), _("_Subsequent events"), GTK_RESPONSE_OK);

src/gcal-utils.h

@@ -141,6 +141,6 @@ gboolean        is_source_enabled                               (ESource
 
 gboolean        ask_recurrence_modification_type                (GtkWidget             *parent,
                                                                  ECalObjModType        *modtype,
-                                                                 ESource                source);
+                                                                 ESource               *source);
 
 #endif // __GCAL_UTILS_H__