[gedit-code-assistance] Keep ref to document in case it gets closed while opening it

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 92522d082938476f1654dab03cdc7c73b0dd4632
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Mon Feb 17 14:44:51 2014 +0100

    Keep ref to document in case it gets closed while opening it

 src/gca-backend.vala |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/src/gca-backend.vala b/src/gca-backend.vala
index be30949..5254754 100644
--- a/src/gca-backend.vala
+++ b/src/gca-backend.vala
@@ -174,7 +174,8 @@ class Backend : Object
 
                foreach (var v in views)
                {
-                       if (v.document == null)
+                       var doc = v.document;
+                       if (doc == null)
                        {
                                // This happens when a document has been closed while we're
                                // iterating over open views.
@@ -183,8 +184,8 @@ class Backend : Object
 
                        var dp = yield unsaved_document(v);
 
-                       ret += DBus.OpenDocument(){
-                               path = v.document.path,
+                       ret += DBus.OpenDocument() {
+                               path = doc.path,
                                data_path = (dp == null ? "" : dp)
                        };
                }