Mail: optimized discarding invalid SMTP commands.
There is no need to scan buffer from s->buffer->pos, as we already scanned
the buffer till "p" and wasn't able to find an LF.
There is no real need for this change in SMTP, since it is at most a
microoptimization of a non-common code path. Similar code in IMAP, however,
will have to start scanning from "p" to be correct, since there can be
newlines in IMAP literals.
diff --git a/src/mail/ngx_mail_parse.c b/src/mail/ngx_mail_parse.c
index 0712ad5..c4e8f0e 100644
--- a/src/mail/ngx_mail_parse.c
+++ b/src/mail/ngx_mail_parse.c
@@ -843,7 +843,7 @@
/* skip invalid command till LF */
- for (p = s->buffer->pos; p < s->buffer->last; p++) {
+ for ( /* void */ ; p < s->buffer->last; p++) {
if (*p == LF) {
s->state = sw_start;
s->buffer->pos = p + 1;
