Add _REGEX_UTILS_H to avoid duplication.

diff --git a/src/include/regex/utils.h b/src/include/regex/utils.h
index 72f89dcafc25070ed309ce424fc91379214a7f0c..4bf6d9eace54a421932d5f68e4b108be57905aaa 100644 (file)
--- a/src/include/regex/utils.h
+++ b/src/include/regex/utils.h
@@ -37,6 +37,9 @@
  *             @(#)utils.h             8.3 (Berkeley) 3/20/94
  */
 
+#ifndef _REGEX_UTILS_H
+#define _REGEX_UTILS_H
+
 #include <limits.h>
 
 /* utility definitions */
@@ -57,3 +60,5 @@ typedef unsigned char uch;
 #define NDEBUG                                 /* no assertions please */
 #endif
 #endif
+
+#endif /* _REGEX_UTILS_H */