manually apply cpp20 fixes from zaphoyd/websocketpp#1060

the patch link from  zaphoyd/websocketpp#1068 (comment) didn't work for some reason, so i looked at the 1060 PR

the PR had 10 commits https://github.com/zaphoyd/websocketpp/pull/1060/commits, all but 2 of which seemed entirely unrelated to the cpp20 fix

so i manually pulled the changes from the 2 cpp 20 related commits:
* zaphoyd/websocketpp@9b7fdd5
* zaphoyd/websocketpp@0823cfe

Co-authored-by: Andre Azevedo <andre.azevedo@gmail.com>

Author: briaguya0

subprojects/websocketpp/websocketpp/endpoint.hpp

@@ -109,7 +109,7 @@ class endpoint : public config::transport_type, public config::endpoint_base {
 
 
     /// Destructor
-    ~endpoint<connection,config>() {}
+    ~endpoint() {}
 
     #ifdef _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
         // no copy constructor because endpoints are not copyable

subprojects/websocketpp/websocketpp/logger/basic.hpp

@@ -58,33 +58,33 @@ namespace log {
 template <typename concurrency, typename names>
 class basic {
 public:
-    basic<concurrency,names>(channel_type_hint::value h =
+    basic(channel_type_hint::value h =
         channel_type_hint::access)
       : m_static_channels(0xffffffff)
       , m_dynamic_channels(0)
       , m_out(h == channel_type_hint::error ? &std::cerr : &std::cout) {}
 
-    basic<concurrency,names>(std::ostream * out)
+    basic(std::ostream * out)
       : m_static_channels(0xffffffff)
       , m_dynamic_channels(0)
       , m_out(out) {}
 
-    basic<concurrency,names>(level c, channel_type_hint::value h =
+    basic(level c, channel_type_hint::value h =
         channel_type_hint::access)
       : m_static_channels(c)
       , m_dynamic_channels(0)
       , m_out(h == channel_type_hint::error ? &std::cerr : &std::cout) {}
 
-    basic<concurrency,names>(level c, std::ostream * out)
+    basic(level c, std::ostream * out)
       : m_static_channels(c)
       , m_dynamic_channels(0)
       , m_out(out) {}
 
     /// Destructor
-    ~basic<concurrency,names>() {}
+    ~basic() {}
 
     /// Copy constructor
-    basic<concurrency,names>(basic<concurrency,names> const & other)
+    basic(basic<concurrency,names> const & other)
      : m_static_channels(other.m_static_channels)
      , m_dynamic_channels(other.m_dynamic_channels)
      , m_out(other.m_out)
@@ -97,7 +97,7 @@ class basic {
 
 #ifdef _WEBSOCKETPP_MOVE_SEMANTICS_
     /// Move constructor
-    basic<concurrency,names>(basic<concurrency,names> && other)
+    basic(basic<concurrency,names> && other)
      : m_static_channels(other.m_static_channels)
      , m_dynamic_channels(other.m_dynamic_channels)
      , m_out(other.m_out)

subprojects/websocketpp/websocketpp/roles/server_endpoint.hpp

@@ -72,19 +72,19 @@ class server : public endpoint<connection<config>,config> {
     }
 
     /// Destructor
-    ~server<config>() {}
+    ~server() {}
 
 #ifdef _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
     // no copy constructor because endpoints are not copyable
-    server<config>(server<config> &) = delete;
+    server(server<config> &) = delete;
 
     // no copy assignment operator because endpoints are not copyable
     server<config> & operator=(server<config> const &) = delete;
 #endif // _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
 
 #ifdef _WEBSOCKETPP_MOVE_SEMANTICS_
     /// Move constructor
-    server<config>(server<config> && o) : endpoint<connection<config>,config>(std::move(o)) {}
+    server(server<config> && o) : endpoint<connection<config>,config>(std::move(o)) {}
 
 #ifdef _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
     // no move assignment operator because of const member variables