src: use bool instead of integer literal in connection_wrap.cc

Signed-off-by: gengjiawen <technicalcute@gmail.com>

PR-URL: #25923
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>

src/connection_wrap.cc

@@ -94,7 +94,7 @@ void ConnectionWrap<WrapType, UVType>::AfterConnect(uv_connect_t* req,
   bool readable, writable;
 
   if (status) {
-    readable = writable = 0;
+    readable = writable = false;
   } else {
     readable = uv_is_readable(req->handle) != 0;
     writable = uv_is_writable(req->handle) != 0;