test: check callback not invoked on lookup error

Use `common.mustNotCall()` to confirm that callback is not invoked when
`dns.lookup()` throws.

PR-URL: #13456
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>

test/parallel/test-dns-lookup.js

@@ -24,15 +24,15 @@ assert.throws(() => {
     hints: 100,
     family: 0,
     all: false
-  }, () => {});
+  }, common.mustNotCall());
 }, /^TypeError: Invalid argument: hints must use valid flags$/);
 
 assert.throws(() => {
   dns.lookup(false, {
     hints: 0,
     family: 20,
     all: false
-  }, () => {});
+  }, common.mustNotCall());
 }, /^TypeError: Invalid argument: family must be 4 or 6$/);
 
 assert.doesNotThrow(() => {