test: ignore connection errors for hostname check

PR-URL: #14073 Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Luigi Pinca <[email protected]>

Author: refack

test/parallel/test-http-hostname-typechecking.js

@@ -18,10 +18,12 @@ vals.forEach((v) =>{
 assert.throws(()=>http.request({host: v}),errHost);
 });
 
-// These values are OK and should not throw synchronously
+// These values are OK and should not throw synchronously.
+// Only testing for 'hostname' validation so ignore connection errors.
+constdontCare=()=>{};
 ['',undefined,null].forEach((v)=>{
 assert.doesNotThrow(()=>{
-http.request({hostname: v}).on('error',()=>{}).end();
-http.request({host: v}).on('error',()=>{}).end();
+http.request({hostname: v}).on('error',dontCare).end();
+http.request({host: v}).on('error',dontCare).end();
 });
 });