use rb_sym2str

* ext/openssl/ossl_ssl.c (ossl_sslctx_set_ssl_version): use
  rb_sym2str to get rid of inadvertent ID creations.

* ext/socket/ancdata.c (ancillary_inspect): ditto.

* ext/socket/option.c (sockopt_inspect): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51586 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/openssl/ossl_ssl.c

@@ -174,13 +174,13 @@ ossl_sslctx_set_ssl_version(VALUE self, VALUE ssl_method)
 {
     SSL_METHOD *method = NULL;
     const char *s;
+    VALUE m = ssl_method;
     int i;
 
     SSL_CTX *ctx;
     if (RB_TYPE_P(ssl_method, T_SYMBOL))
-	s = rb_id2name(SYM2ID(ssl_method));
-    else
-	s =  StringValuePtr(ssl_method);
+	m = rb_sym2str(ssl_method);
+    s = StringValuePtr(m);
     for (i = 0; i < numberof(ossl_ssl_method_tab); i++) {
         if (strcmp(ossl_ssl_method_tab[i].name, s) == 0) {
             method = ossl_ssl_method_tab[i].func();

ext/socket/ancdata.c

@@ -990,7 +990,7 @@ ancillary_inspect(VALUE self)
 
         vtype = ip_cmsg_type_to_sym(level, type);
         if (SYMBOL_P(vtype))
-            rb_str_catf(ret, " %s", rb_id2name(SYM2ID(vtype)));
+            rb_str_catf(ret, " %"PRIsVALUE, rb_sym2str(vtype));
         else
             rb_str_catf(ret, " cmsg_type:%d", type);
     }

ext/socket/option.c

@@ -1244,7 +1244,7 @@ sockopt_inspect(VALUE self)
 
 	v = optname_to_sym(level, optname);
 	if (SYMBOL_P(v))
-	    rb_str_catf(ret, " %s", rb_id2name(SYM2ID(v)));
+	    rb_str_catf(ret, " %"PRIsVALUE, rb_sym2str(v));
 	else
 	    rb_str_catf(ret, " optname:%d", optname);
     }