smtp: free a temp resource

The returned address needs to be freed.

Follow-up to e3905de8196d67b89df1602feb84c1f993211b20
Spotted by Coverity

Closes #13038

diff --git a/lib/smtp.c b/lib/smtp.c
index 605bb16eeb0221fb528fdaa9387b6d05204db017..a937fbf217c2e81579c8c12fcaf563f6dbc141f5 100644 (file)
--- a/lib/smtp.c
+++ b/lib/smtp.c
@@ -677,6 +677,7 @@ static CURLcode smtp_perform_mail(struct Curl_easy *data)
         /* An invalid mailbox was provided but we'll simply let the server
            worry about it */
         auth = aprintf("<%s>", address);
+      free(address);
     }
     else
       /* Empty AUTH, RFC-2554, sect. 5 */