patch: file(1) imsg_compose receives -1 cast to uint32_t

[Abel Abraham Camarillo Ojeda]

as shown in patch imsg_compose receives -1 as type and peerid
argument to imsg_compose, according to imsg_compose definition:

     int
     imsg_compose(struct imsgbuf *ibuf, uint32_t type, uint32_t peerid,
         pid_t pid, int fd, const void *data, uint16_t datalen);


So 4294967295 is used as special value when maybe 0 should be used?

regress ok on amd64, patch inline and attached in case of mangling

Index: file.c
===================================================================
RCS file: /cvs/src/usr.bin/file/file.c,v
retrieving revision 1.66
diff -u -p -r1.66 file.c
--- file.c      15 Jan 2018 19:45:51 -0000      1.66
+++ file.c      14 Feb 2018 16:02:46 -0000
@@ -280,7 +280,7 @@ prepare_message(struct input_msg *msg, i
 static void
 send_message(struct imsgbuf *ibuf, void *msg, size_t msglen, int fd)
 {
-       if (imsg_compose(ibuf, -1, -1, 0, fd, msg, msglen) != 1)
+       if (imsg_compose(ibuf, 0, 0, 0, fd, msg, msglen) != 1)
                err(1, "imsg_compose");
        if (imsg_flush(ibuf) != 0)
                err(1, "imsg_flush");

Index: file.c
===================================================================
RCS file: /cvs/src/usr.bin/file/file.c,v
retrieving revision 1.66
diff -u -p -r1.66 file.c
--- file.c	15 Jan 2018 19:45:51 -0000	1.66
+++ file.c	14 Feb 2018 16:02:46 -0000
@@ -280,7 +280,7 @@ prepare_message(struct input_msg *msg, i
 static void
 send_message(struct imsgbuf *ibuf, void *msg, size_t msglen, int fd)
 {
-	if (imsg_compose(ibuf, -1, -1, 0, fd, msg, msglen) != 1)
+	if (imsg_compose(ibuf, 0, 0, 0, fd, msg, msglen) != 1)
 		err(1, "imsg_compose");
 	if (imsg_flush(ibuf) != 0)
 		err(1, "imsg_flush");