attach: free result before potentially strduping a second time.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>

diff --git a/src/lxc/attach.c b/src/lxc/attach.c
index 6b89763ccb2b456f332bda4448da79b5b155a214..9ab56826375b52947ed5057b3d64dc9afbefc442 100644 (file)
--- a/src/lxc/attach.c
+++ b/src/lxc/attach.c
@@ -355,6 +355,8 @@ char *lxc_attach_getpwshell(uid_t uid)
                        }
                        if (!token)
                                continue;
+                       if (result)
+                               free(result);
                        result = strdup(token);
 
                        /* sanity check that there are no fields after that */