commit miss.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1717 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ruby.c

@@ -882,7 +882,7 @@ set_arg0(val, id)
 {
     char *s;
     int i;
-    static int len;
+    int len = origarglen;
 
     if (origargv == 0) rb_raise(rb_eRuntimeError, "$0 not initialized");
     StringValue(val);