tls: include invalid method name in thrown error

When an invalid TLS method name error is thrown, include the invalid
name in the error message.

Author: sam-github

src/node_crypto.cc

@@ -627,7 +627,8 @@ void SecureContext::Init(const FunctionCallbackInfo<Value>& args) {
       max_version = TLS1_2_VERSION;
       method = TLS_client_method();
     } else {
-      THROW_ERR_TLS_INVALID_PROTOCOL_METHOD(env, "Unknown method");
+      const std::string msg("Unknown method: ");
+      THROW_ERR_TLS_INVALID_PROTOCOL_METHOD(env, (msg + * sslmethod).c_str());
       return;
     }
   }

test/parallel/test-tls-no-sslv23.js

@@ -8,7 +8,10 @@ const tls = require('tls');
 
 assert.throws(function() {
   tls.createSecureContext({ secureProtocol: 'blargh' });
-}, /Unknown method/);
+}, {
+  code: 'ERR_TLS_INVALID_PROTOCOL_METHOD',
+  message: 'Unknown method: blargh',
+});
 
 const errMessageSSLv2 = /SSLv2 methods disabled/;