Correct length to use LOFF_T.

This is a part two, made in master, to the stable branch commit
11b18027.  These are mostly length adjustments to use LOFF_T, matching the
BODY->length type.

An argument could be made for size_t instead, and a few places in Mutt
do assign between those types.  I've used LOFF_T because off_t is a
signed integer.  Some changes in this commit affect loops that
decrement a length pointer while > 0.  Switching to a size_t could
create a wraparound infinite loop bug.

This also changes the Content-Length header parser to use atoll()
intead of atol().  I noticed from the man page that atol() doesn't
seem to return -1 on error.  But I've kept the check anyway.

1 files changed, 1 insertions, 1 deletions

diff --git a/parse.c b/parse.c
index daa16f7c..9bf01338 100644
--- a/parse.c
+++ b/parse.c
@@ -1282,7 +1282,7 @@ int mutt_parse_rfc822_line (ENVELOPE *e, HEADER *hdr, char *line, char *p, short
         {
           if (hdr)
           {
-            if ((hdr->content->length = atol (p)) < 0)
+            if ((hdr->content->length = (LOFF_T) atoll (p)) < 0)
               hdr->content->length = -1;
           }
           matched = 1;