[gnome-builder] buildsystem: we certainly don't want to see this 'unused' warning at each build but tracing need thi

[Sébastien Lafargue <slafargue src gnome org>]

commit 813c2ff2090b707afe3a1f438d0d1140415f2e89
Author: Sebastien Lafargue <slafargue gnome org>
Date:   Sun Feb 19 22:24:17 2017 +0100

    buildsystem: we certainly don't want to see this 'unused' warning
    at each build but tracing need this variable so let's use G_GNUC_UNUSED

 libide/buildsystem/ide-build-stage-launcher.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libide/buildsystem/ide-build-stage-launcher.c b/libide/buildsystem/ide-build-stage-launcher.c
index 0282e27..b5aba20 100644
--- a/libide/buildsystem/ide-build-stage-launcher.c
+++ b/libide/buildsystem/ide-build-stage-launcher.c
@@ -113,7 +113,7 @@ ide_build_stage_launcher_run (IdeBuildStage         *stage,
                               gpointer               user_data)
 {
   IdeBuildStageLauncher *self = (IdeBuildStageLauncher *)stage;
-  IdeBuildStageLauncherPrivate *priv = ide_build_stage_launcher_get_instance_private (self);
+  IdeBuildStageLauncherPrivate *priv = ide_build_stage_launcher_get_instance_private (self); G_GNUC_UNUSED
   g_autoptr(GTask) task = NULL;
   g_autoptr(GError) error = NULL;
   g_autoptr(IdeSubprocess) subprocess = NULL;