[gnome-builder] meson: set cwd to builddir

[Christian Hergert <chergert src gnome org>]

commit 59e77d368ee6334e04c51cd438f0fd6cafc23d60
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jan 22 15:02:24 2019 -0800

    meson: set cwd to builddir
    
    This was previously inherited by the pipeline, but now we create the
    launcher ourselves so set it manually.

 src/plugins/meson/gbp-meson-build-target-provider.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/src/plugins/meson/gbp-meson-build-target-provider.c 
b/src/plugins/meson/gbp-meson-build-target-provider.c
index 56f395e32..e5db950e8 100644
--- a/src/plugins/meson/gbp-meson-build-target-provider.c
+++ b/src/plugins/meson/gbp-meson-build-target-provider.c
@@ -56,7 +56,10 @@ create_launcher (IdeContext  *context,
     }
 
   if ((ret = ide_runtime_create_launcher (runtime, error)))
-    ide_subprocess_launcher_set_flags (ret, G_SUBPROCESS_FLAGS_STDOUT_PIPE | 
G_SUBPROCESS_FLAGS_STDERR_SILENCE);
+    {
+      ide_subprocess_launcher_set_flags (ret, G_SUBPROCESS_FLAGS_STDOUT_PIPE | 
G_SUBPROCESS_FLAGS_STDERR_SILENCE);
+      ide_subprocess_launcher_set_cwd (ret, ide_pipeline_get_builddir (pipeline));
+    }
 
   return g_steal_pointer (&ret);
 }