src: use macro instead of magic number for fd

PR-URL: #27152
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

src/node_report_utils.cc

@@ -192,15 +192,17 @@ void WalkHandle(uv_handle_t* h, void* arg) {
     if (rc == 0) {
       writer->json_keyvalue("fd", static_cast<int>(fd_v));
       switch (fd_v) {
-        case 0:
+        case STDIN_FILENO:
           writer->json_keyvalue("stdio", "stdin");
           break;
-        case 1:
+        case STDOUT_FILENO:
           writer->json_keyvalue("stdio", "stdout");
           break;
-        case 2:
+        case STDERR_FILENO:
           writer->json_keyvalue("stdio", "stderr");
           break;
+        default:
+          break;
       }
     }
   }