[gnome-flashback] session: make gf_session_set_environment void

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 2dff51af8df568a7e8092dcbcacfbde9619fc149
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Aug 17 15:19:33 2019 +0300

    session: make gf_session_set_environment void
    
    None of the callers were using the return value.

 gnome-flashback/gf-session.c | 9 ++-------
 gnome-flashback/gf-session.h | 2 +-
 2 files changed, 3 insertions(+), 8 deletions(-)
---
diff --git a/gnome-flashback/gf-session.c b/gnome-flashback/gf-session.c
index 4e4bdfb..9925750 100644
--- a/gnome-flashback/gf-session.c
+++ b/gnome-flashback/gf-session.c
@@ -259,10 +259,8 @@ gf_session_new (gboolean                replace,
  *
  * Set environment variable to specified value. May only be used during the
  * Session Manager initialization phase.
- *
- * Returns: %TRUE if environment was set, %FALSE otherwise.
  */
-gboolean
+void
 gf_session_set_environment (GfSession   *session,
                             const gchar *name,
                             const gchar *value)
@@ -283,13 +281,10 @@ gf_session_set_environment (GfSession   *session,
     {
       g_warning ("Failed to set the environment: %s", error->message);
       g_error_free (error);
-
-      return FALSE;
+      return;
     }
 
   g_variant_unref (variant);
-
-  return TRUE;
 }
 
 /**
diff --git a/gnome-flashback/gf-session.h b/gnome-flashback/gf-session.h
index e48eb7c..0ed69e6 100644
--- a/gnome-flashback/gf-session.h
+++ b/gnome-flashback/gf-session.h
@@ -46,7 +46,7 @@ GfSession *gf_session_new             (gboolean                replace,
                                        GfSessionEndCallback    end_cb,
                                        gpointer                user_data);
 
-gboolean   gf_session_set_environment (GfSession              *session,
+void       gf_session_set_environment (GfSession              *session,
                                        const gchar            *name,
                                        const gchar            *value);