[glib] gdesktopappinfo: Avoid crash by NULL-ing data.pid_envvar before launch

[Michael Terry <mterry src gnome org>]

commit 31c3082e19551377049742a7862dab455727844a
Author: Michael Terry <michael terry canonical com>
Date:   Wed Jan 4 13:08:56 2012 -0500

    gdesktopappinfo: Avoid crash by NULL-ing data.pid_envvar before launch
    
    https://bugzilla.gnome.org/show_bug.cgi?id=667279

 gio/gdesktopappinfo.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gio/gdesktopappinfo.c b/gio/gdesktopappinfo.c
index ee9802b..453ff69 100644
--- a/gio/gdesktopappinfo.c
+++ b/gio/gdesktopappinfo.c
@@ -1292,6 +1292,10 @@ _g_desktop_app_info_launch_uris_internal (GAppInfo                   *appinfo,
                                    TRUE);
           data.pid_envvar = (char *)g_environ_getenv (envp, "GIO_LAUNCHED_DESKTOP_FILE_PID");
         }
+      else
+        {
+          data.pid_envvar = NULL;
+        }
 
       display = NULL;
       sn_id = NULL;