Include unistd.h (needed because of select) and string.h (needed

because of bzero).

src/libraries/libisc-new/src/isc_event.c

@@ -29,6 +29,12 @@
 #ifdef HAVE_SYS_SELECT_H
 #  include <sys/select.h>
 #endif
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>
+#endif
+#ifdef HAVE_STRING_H
+#  include <string.h>
+#endif
 
 #include "isc.h"
 #include "intern.h"