inet_diag: fix signedness warnings on 32-bit

I thought my compiler would be smarter :<

1 files changed, 3 insertions, 2 deletions

diff --git a/ext/raindrops/linux_inet_diag.c b/ext/raindrops/linux_inet_diag.c
index abc2ef9..4d3b399 100644
--- a/ext/raindrops/linux_inet_diag.c
+++ b/ext/raindrops/linux_inet_diag.c
@@ -317,6 +317,7 @@ static VALUE diag(void *ptr)
 
         while (1) {
                 ssize_t readed;
+                size_t r;
                 struct nlmsghdr *h = (struct nlmsghdr *)args->iov[0].iov_base;
 
                 prep_msghdr(&msg, args, &nladdr, 1);
@@ -329,8 +330,8 @@ static VALUE diag(void *ptr)
                 }
                 if (readed == 0)
                         goto out;
-
-                for ( ; NLMSG_OK(h, readed); h = NLMSG_NEXT(h, readed)) {
+                r = (size_t)readed;
+                for ( ; NLMSG_OK(h, r); h = NLMSG_NEXT(h, r)) {
                         if (h->nlmsg_seq != seq)
                                 continue;
                         if (h->nlmsg_type == NLMSG_DONE)