crypto: replace gotos

PR-URL: #23132
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: tniessen

src/node_crypto_clienthello.cc

@@ -74,12 +74,6 @@ bool ClientHelloParser::ParseRecordHeader(const uint8_t* data, size_t avail) {
 
 void ClientHelloParser::ParseHeader(const uint8_t* data, size_t avail) {
   ClientHello hello;
-  bool failed = true;
-
-  OnScopeLeave cleanup([&]() {
-    if (failed)
-      End();
-  });
 
   // >= 5 + frame size bytes for frame parsing
   if (body_offset_ + frame_len_ > avail)
@@ -94,23 +88,23 @@ void ClientHelloParser::ParseHeader(const uint8_t* data, size_t avail) {
   if (data[body_offset_ + 4] != 0x03 ||
       data[body_offset_ + 5] < 0x01 ||
       data[body_offset_ + 5] > 0x03) {
-    return;
+    return End();
   }
 
   if (data[body_offset_] == kClientHello) {
     if (state_ == kTLSHeader) {
       if (!ParseTLSClientHello(data, avail))
-        return;
+        return End();
     } else {
       // We couldn't get here, but whatever
-      return;
+      return End();
     }
 
     // Check if we overflowed (do not reply with any private data)
     if (session_id_ == nullptr ||
         session_size_ > 32 ||
         session_id_ + session_size_ > data + avail) {
-      return;
+      return End();
     }
   }
 
@@ -122,8 +116,6 @@ void ClientHelloParser::ParseHeader(const uint8_t* data, size_t avail) {
   hello.servername_ = servername_;
   hello.servername_size_ = static_cast<uint8_t>(servername_size_);
   onhello_cb_(cb_arg_, hello);
-  failed = false;
-  return;
 }