[master] Include unistd.h in watch_socket.cc to fix compilation on OpenBSD.

This change was okayed on Jabber.

diff --git a/src/lib/util/watch_socket.cc b/src/lib/util/watch_socket.cc
index 4a4b5817271047e788aba81f4832edce8b40396a..a5b7b028875c1a39a6ce785a201a8ab1cc32f14c 100644 (file)
--- a/src/lib/util/watch_socket.cc
+++ b/src/lib/util/watch_socket.cc
@@ -14,6 +14,7 @@
 #include <sstream>
 #include <string.h>
 #include <sys/select.h>
+#include <unistd.h>
 
 namespace isc {
 namespace util {