Fix memory leak in error path.

*info is allocated via xstrdup but was leaked in the PAM_AUTH_ERR path.
From github PR#266.

diff --git a/auth-pam.c b/auth-pam.c
index f39d03f4b18ee6faf7fce3d08ae196daa58c2e27..29034e40d655e44f43f3f8cc243e66f679aa0e11 100644 (file)
--- a/auth-pam.c
+++ b/auth-pam.c
@@ -886,6 +886,7 @@ sshpam_query(void *ctx, char **name, char **info,
                case PAM_AUTH_ERR:
                        debug3("PAM: %s", pam_strerror(sshpam_handle, type));
                        if (**prompts != NULL && strlen(**prompts) != 0) {
+                               free(*info);
                                *info = **prompts;
                                **prompts = NULL;
                                *num = 0;