Add WSAECONNRESET to conn_is_closed (#13)

Author: paulmon

ssl/statem/statem_srvr.c

@@ -774,6 +774,10 @@ static ossl_inline int conn_is_closed(void)
 #if defined(ECONNRESET)
     case ECONNRESET:
         return 1;
+#endif
+#if defined(WSAECONNRESET)
+    case WSAECONNRESET:
+        return 1;
 #endif
     default:
         return 0;