test: fix unrelated variable name changes

PR-URL: #18823
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Author: apapirovski

test/parallel/test-process-geteuid-getegid.js

@@ -44,5 +44,5 @@ assert.notStrictEqual(newgid, oldgid);
 
 const olduid = process.geteuid();
 process.seteuid('nobody');
-const newAsyncId = process.geteuid();
-assert.notStrictEqual(newAsyncId, olduid);
+const newuid = process.geteuid();
+assert.notStrictEqual(newuid, olduid);

test/parallel/test-process-setuid-setgid.js

@@ -63,5 +63,5 @@ assert.notStrictEqual(newgid, oldgid);
 
 const olduid = process.getuid();
 process.setuid('nobody');
-const newAsyncId = process.getuid();
-assert.notStrictEqual(newAsyncId, olduid);
+const newuid = process.getuid();
+assert.notStrictEqual(newuid, olduid);