src: remove SecureContext::operator*

This rather mysterious operator is only used once and can easily be
replaced with ssl_ctx().

PR-URL: #43121
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>

src/crypto/crypto_common.cc

@@ -213,7 +213,7 @@ const char* GetServerName(SSL* ssl) {
 }
 
 bool SetGroups(SecureContext* sc, const char* groups) {
-  return SSL_CTX_set1_groups_list(**sc, groups) == 1;
+  return SSL_CTX_set1_groups_list(sc->ssl_ctx(), groups) == 1;
 }
 
 const char* X509ErrorCode(long err) {  // NOLINT(runtime/int)

src/crypto/crypto_context.h

@@ -41,8 +41,6 @@ class SecureContext final : public BaseObject {
   static void RegisterExternalReferences(ExternalReferenceRegistry* registry);
   static SecureContext* Create(Environment* env);
 
-  SSL_CTX* operator*() const { return ctx_.get(); }
-
   SSL_CTX* ssl_ctx() const { return ctx_.get(); }
 
   SSLPointer CreateSSL();