[gnome-builder] diagnostics: ignore cancelled and not-supported errors

[Christian Hergert <chergert src gnome org>]

commit 72321432030bad2c3e13aaa924b2a94a6be9e739
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jan 12 17:20:16 2018 -0800

    diagnostics: ignore cancelled and not-supported errors

 src/libide/diagnostics/ide-diagnostics-manager.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/libide/diagnostics/ide-diagnostics-manager.c 
b/src/libide/diagnostics/ide-diagnostics-manager.c
index 22577c749..d4ab41cb1 100644
--- a/src/libide/diagnostics/ide-diagnostics-manager.c
+++ b/src/libide/diagnostics/ide-diagnostics-manager.c
@@ -317,7 +317,9 @@ ide_diagnostics_group_diagnose_cb (GObject      *object,
 
   diagnostics = ide_diagnostic_provider_diagnose_finish (provider, result, &error);
 
-  if (error != NULL)
+  if (error != NULL &&
+      !g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED) &&
+      !g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED))
     g_warning ("%s", error->message);
 
   /*