strchr.c in rhodes-6.0.11

- old
+ new

@@ -1,6 +1,10 @@
 /* public domain rewrite of strchr(3) and strrchr(3) */
 
+#include "ruby/missing.h"
+
+size_t strlen(const char*);
+
 char *
 strchr(const char *s, int c)
 {
     if (c == 0) return (char *)s + strlen(s);
     while (*s) {