[gnome-documents] manager: fix a silly typo

[Cosimo Cecchi <cosimoc src gnome org>]

commit ddb294fa1d6a3a99fe2857188000c014c576df00
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Wed Nov 9 12:02:49 2011 -0500

    manager: fix a silly typo
    
    Code wants to check if the function has been defined on the object, not
    check its return value.

 src/manager.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/manager.js b/src/manager.js
index d8141a1..b2eba21 100644
--- a/src/manager.js
+++ b/src/manager.js
@@ -115,7 +115,7 @@ BaseManager.prototype = {
 
         if (item.id == 'all')
             retval = this._getAllFilter();
-        else if (item && item.getFilter())
+        else if (item && item.getFilter)
             retval = item.getFilter();
 
         return retval;