lib-master: include unistd.h for master_getopt() users.

diff --git a/src/lib-master/master-service.h b/src/lib-master/master-service.h
index 60c235c2b457fed0ecaaaf1a7efe749e78c38a44..76658d2a8ae0e8c7bf5b8e4f4276b59139b2e77c 100644 (file)
--- a/src/lib-master/master-service.h
+++ b/src/lib-master/master-service.h
@@ -3,6 +3,8 @@
 
 #include "net.h"
 
+#include <unistd.h> /* for getopt() opt* variables */
+
 enum master_service_flags {
        /* stdin/stdout already contains a client which we want to serve */
        MASTER_SERVICE_FLAG_STD_CLIENT          = 0x01,