tls: fix leak on invalid protocol method

Author: codebytere

src/crypto/crypto_context.cc

@@ -1355,10 +1355,8 @@ SecureContext::SecureContext(Environment* env, Local<Object> wrap)
 }
 
 inline void SecureContext::Reset() {
-  if (ctx_ != nullptr) {
-    env()->external_memory_accounter()->Decrease(env()->isolate(),
-                                                 kExternalSize);
-  }
+  env()->external_memory_accounter()->Decrease(env()->isolate(),
+                                                kExternalSize);
   ctx_.reset();
   cert_.reset();
   issuer_.reset();