[folks] core: Unmark a private method as async

[Philip Withnall <pwithnall src gnome org>]

commit a446d66e6b93d50bb157703b648f3dcb6dce6af2
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Thu Jan 22 16:19:03 2015 +0000

    core: Unmark a private method as async
    
    It does not use any async features or yields, so there’s no point in it
    being async.

 folks/individual-aggregator.vala |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/folks/individual-aggregator.vala b/folks/individual-aggregator.vala
index 3f10fba..5bf366b 100644
--- a/folks/individual-aggregator.vala
+++ b/folks/individual-aggregator.vala
@@ -903,7 +903,7 @@ public class Folks.IndividualAggregator : Object
       return matches;
     }
 
-  private async void _add_backend (Backend backend)
+  private void _add_backend (Backend backend)
     {
       if (!this._backends.contains (backend))
         {
@@ -949,7 +949,7 @@ public class Folks.IndividualAggregator : Object
             }
         }
 
-      this._add_backend.begin (backend);
+      this._add_backend (backend);
     }
 
   private void _set_primary_store (PersonaStore store)