internal.h: Use `unsigned' for nextid

This is constantly incremented and needs to wrap.  In practice I don't
believe any compilers spot the UB.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/src/internal.h b/src/internal.h
index 51e9ea205d46c9edd3b1513d118a84fe3bf6ebcb..923d43d1381d8e9ef9b703bd8f9f35208fb65de4 100644 (file)
--- a/src/internal.h
+++ b/src/internal.h
@@ -371,7 +371,8 @@ struct adns__state {
   int configerrno;
   struct query_queue udpw, tcpw, childw, output, intdone;
   adns_query forallnext;
-  int nextid, tcpsocket;
+  unsigned nextid;
+  int tcpsocket;
   struct udpsocket { int af; int fd; } udpsockets[MAXUDP];
   int nudpsockets;
   vbuf tcpsend, tcprecv;