added print.h includes

lib/isc/tests/regex_test.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2013, 2015  Internet Systems Consortium, Inc. ("ISC")
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -27,6 +27,7 @@
 #endif
 
 #include <isc/regex.h>
+#include <isc/print.h>
 #include <isc/util.h>
 
 ATF_TC(regex_validate);