fs: fix fs.read when passing null value

PR-URL: https://github.com/nodejs/node/pull/32479
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>

lib/fs.js

@@ -484,10 +484,12 @@ function read(fd, buffer, offset, length, position, callback) {
       callback = offset;
     }
 
-    buffer = options.buffer || Buffer.alloc(16384);
-    offset = options.offset || 0;
-    length = options.length || buffer.length;
-    position = options.position;
+    ({
+      buffer = Buffer.alloc(16384),
+      offset = 0,
+      length = buffer.length,
+      position
+    } = options);
   }
 
   validateBuffer(buffer);