context (if any), retrieves the result, sets up expansion
strings and evaluates the condition outcome. */
-int spf_process(uschar **listptr, uschar *spf_envelope_sender, int action) {
+int spf_process(const uschar **listptr, uschar *spf_envelope_sender, int action) {
int sep = 0;
- uschar *list = *listptr;
+ const uschar *list = *listptr;
uschar *spf_result_id;
uschar spf_result_id_buffer[128];
int rc = SPF_RESULT_PERMERROR;