t/t7406-submodule-update.sh: use the $( ... ) construct for command substitution

diff --git a/imap-send.c b/imap-send.c
index 8c3fc212bacb4da7c2afea4a2aa47e051a4ef1ca..4d3b7737a99de02c42945951e91b4d7ed865611d 100644 (file)
--- a/imap-send.c
+++ b/imap-send.c
@@ -889,9 +889,8 @@ static char *cram(const char *challenge_64, const char *user, const char *pass)
        }
 
        /* response: "<user> <digest in hex>" */
-       resp_len = strlen(user) + 1 + strlen(hex) + 1;
-       response = xmalloc(resp_len);
-       sprintf(response, "%s %s", user, hex);
+       response = xstrfmt("%s %s", user, hex);
+       resp_len = strlen(response) + 1;
 
        response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1);
        encoded_len = EVP_EncodeBlock((unsigned char *)response_64,