[gnome-builder] diagnostics-manager: don't leak GWeakRef objects

[Christian Hergert <chergert src gnome org>]

commit c34a2d1bc78c1c745944119691c29cf23d0149a7
Author: Christian Hergert <chergert redhat com>
Date:   Fri Oct 28 16:37:32 2016 -0700

    diagnostics-manager: don't leak GWeakRef objects
    
    These return a full object reference, so we need to use an autoptr to
    release them when we no longer use them.

 libide/diagnostics/ide-diagnostics-manager.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/libide/diagnostics/ide-diagnostics-manager.c b/libide/diagnostics/ide-diagnostics-manager.c
index 366d201..bcbfd52 100644
--- a/libide/diagnostics/ide-diagnostics-manager.c
+++ b/libide/diagnostics/ide-diagnostics-manager.c
@@ -250,6 +250,8 @@ ide_diagnostics_group_has_diagnostics (IdeDiagnosticsGroup *group)
 static gboolean
 ide_diagnostics_group_can_dispose (IdeDiagnosticsGroup *group)
 {
+  g_autoptr(IdeBuffer) buffer = NULL;
+
   g_assert (group != NULL);
 
   /*
@@ -258,7 +260,9 @@ ide_diagnostics_group_can_dispose (IdeDiagnosticsGroup *group)
    * registered for the group.
    */
 
-  return (g_weak_ref_get (&group->buffer_wr) == NULL) &&
+  buffer = g_weak_ref_get (&group->buffer_wr);
+
+  return (buffer == NULL) &&
          (group->adapter == NULL) &&
          (group->has_diagnostics == FALSE);
 }
@@ -443,7 +447,7 @@ static void
 ide_diagnostics_group_diagnose (IdeDiagnosticsGroup   *group,
                                 IdeDiagnosticsManager *self)
 {
-  IdeBuffer *buffer;
+  g_autoptr(IdeBuffer) buffer = NULL;
 
   IDE_ENTRY;
 
@@ -892,8 +896,9 @@ ide_diagnostics_manager_buffer_notify_file (IdeDiagnosticsManager *self,
   while (g_hash_table_iter_next (&iter, NULL, &value))
     {
       IdeDiagnosticsGroup *group = value;
+      g_autoptr(IdeBuffer) group_buffer = g_weak_ref_get (&group->buffer_wr);
 
-      if (buffer == g_weak_ref_get (&group->buffer_wr))
+      if (buffer == group_buffer)
         {
           g_hash_table_steal (self->groups_by_file, group->file);
           g_set_object (&group->file, gfile);