[gnome-builder] eslint: silence stderr on subprocess

[Christian Hergert <chergert src gnome org>]

commit ee257211c8ae2f9ebbbd50b98b30642e70b00eb3
Author: Christian Hergert <chergert redhat com>
Date:   Sat Jan 1 10:53:48 2022 -0800

    eslint: silence stderr on subprocess

 src/plugins/eslint/eslint_plugin.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/eslint/eslint_plugin.py b/src/plugins/eslint/eslint_plugin.py
index c11221145..1b76201a7 100644
--- a/src/plugins/eslint/eslint_plugin.py
+++ b/src/plugins/eslint/eslint_plugin.py
@@ -65,7 +65,7 @@ class ESLintDiagnosticProvider(Ide.Object, Ide.DiagnosticProvider):
         if launcher is None:
             launcher = Ide.SubprocessLauncher.new(0)
 
-        launcher.set_flags(Gio.SubprocessFlags.STDIN_PIPE | Gio.SubprocessFlags.STDOUT_PIPE)
+        launcher.set_flags(Gio.SubprocessFlags.STDIN_PIPE | Gio.SubprocessFlags.STDOUT_PIPE | 
Gio.SubprocessFlags.STDERR_SILENCE)
         launcher.set_cwd(srcdir)
 
         return launcher