dns: use ternary operator simplify statement

PR-URL: #33234
Reviewed-By: Tobias Nießen <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>

Author: zhangwinning

lib/internal/dns/promises.js

@@ -67,23 +67,15 @@ function createLookupPromise(family, hostname, all, hints, verbatim) {
   return new Promise((resolve, reject) => {
     if (!hostname) {
       emitInvalidHostnameWarning(hostname);
-      if (all)
-        resolve([]);
-      else
-        resolve({ address: null, family: family === 6 ? 6 : 4 });
-
+      resolve(all ? [] : { address: null, family: family === 6 ? 6 : 4 });
       return;
     }
 
     const matchedFamily = isIP(hostname);
 
     if (matchedFamily !== 0) {
       const result = { address: hostname, family: matchedFamily };
-      if (all)
-        resolve([result]);
-      else
-        resolve(result);
-
+      resolve(all ? [result] : result);
       return;
     }