[libsoup/libsoup-3-0] soup-auth-ntlm: Fix a memory leak

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 297a50ae19152dc78e6e1f82625cda7f120fe64e
Author: Milan Crha <mcrha redhat com>
Date:   Fri Apr 22 11:33:41 2022 +0200

    soup-auth-ntlm: Fix a memory leak
    
    The soup_ntlm_parse_challenge() can be called multiple times, but it
    doesn't free any previously stored value, thus causes a memory leak.

 libsoup/auth/soup-auth-ntlm.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/libsoup/auth/soup-auth-ntlm.c b/libsoup/auth/soup-auth-ntlm.c
index 457cc98b..8fdadf14 100644
--- a/libsoup/auth/soup-auth-ntlm.c
+++ b/libsoup/auth/soup-auth-ntlm.c
@@ -758,12 +758,14 @@ soup_ntlm_parse_challenge (const char *challenge,
                        return FALSE;
                }
 
+               g_free (*default_domain);
                *default_domain = g_convert ((char *)chall + domain.offset,
                                             domain.length, "UTF-8", "UCS-2LE",
                                             NULL, NULL, NULL);
        }
 
        if (nonce) {
+               g_free (*nonce);
                *nonce = g_memdup2 (chall + NTLM_CHALLENGE_NONCE_OFFSET,
                                   NTLM_CHALLENGE_NONCE_LENGTH);
        }
@@ -777,6 +779,7 @@ soup_ntlm_parse_challenge (const char *challenge,
                        g_free (chall);
                        return FALSE;
                }
+               g_free (*target_info);
                *target_info = g_memdup2 (chall + target.offset, target.length);
                *target_info_sz = target.length;
        }