regcomp.c: Fix compile error with old version of fcc on Solaris

* regcomp.c (get_min_match_length): Fix compile error with old version
  of fcc (Fujitsu C Compiler) on Solaris 10. [Bug #13059][ruby-dev:49909]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57143 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

regcomp.c

@@ -2233,7 +2233,7 @@ get_min_match_length(Node* node, OnigDistance *min, ScanEnv* env)
           *min = en->min_len;
         else {
 	  if (IS_ENCLOSE_MARK1(NENCLOSE(node)))
-	    *min = 0;  // recursive
+	    *min = 0;  /* recursive */
 	  else {
 	    SET_ENCLOSE_STATUS(node, NST_MARK1);
 	    r = get_min_match_length(en->target, min, env);