[Minor] Fix parsing of ESMTP arguments for Lua API

diff --git a/src/lua/lua_task.c b/src/lua/lua_task.c
index 946910c25841dbf5c8c2360443ab21aa0e63138e..ffeabc4212d1a53918ceae97a54f8428074cf0eb 100644 (file)
--- a/src/lua/lua_task.c
+++ b/src/lua/lua_task.c
@@ -4530,8 +4530,9 @@ lua_task_get_rcpt_esmtp_args(lua_State *L)
 
                                                        if (endptr == colon) {
                                                                /* Valid index found */
+                                                               const char *old_p = p;
                                                                p = colon + 1;
-                                                               len -= (colon - p) + 1;
+                                                               len -= (p - old_p);
 
                                                                /* Store this arg for this recipient */
                                                                if (!g_hash_table_contains(rcpt_args_by_idx, GINT_TO_POINTER(rcpt_idx))) {
@@ -4639,8 +4640,9 @@ lua_task_get_rcpt_esmtp_args(lua_State *L)
 
                                                        if (endptr == colon && rcpt_idx == idx) {
                                                                found = TRUE;
+                                                               const char *old_p = p;
                                                                p = colon + 1;
-                                                               len -= (colon - p) + 1;
+                                                               len -= (p - old_p);
 
                                                                /* Parse KEY=VALUE */
                                                                eq = memchr(p, '=', len);