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761 B

diff --git a/src/http.c b/src/http.c
index 5ee1c93..b45c404 100644
--- a/src/http.c
+++ b/src/http.c
@@ -3728,7 +3728,7 @@ digest_authentication_encode (const char *au, const char *user,
md5_finish_ctx (&ctx, hash);
dump_hash (a2buf, hash);
- if (!strcmp(qop,"auth"))
+ if (qop && !strcmp(qop,"auth"))
{
/* RFC 2617 Digest Access Authentication */
/* generate random hex string */
@@ -3776,7 +3776,7 @@ digest_authentication_encode (const char *au, const char *user,
res = xmalloc (res_size);
- if (!strcmp(qop,"auth"))
+ if (qop && !strcmp (qop, "auth"))
{
snprintf (res, res_size, "Digest "\
"username=\"%s\", realm=\"%s\", nonce=\"%s\", uri=\"%s\", response=\"%s\""\