dgram: use missing validator

We don't mention a value being "falsy" in validation, its
better to use a validator here to keep consistency.

fixup! dgram: use missing validator

Updated the validation to be more strict.

Co-authored-by: Antoine du Hamel <duhamelantoine1995@gmail.com>

Author: VoltrexKeyva

lib/dgram.js

@@ -636,8 +636,8 @@ Socket.prototype.send = function(buffer,
   if (typeof address === 'function') {
     callback = address;
     address = undefined;
-  } else if (address && typeof address !== 'string') {
-    throw new ERR_INVALID_ARG_TYPE('address', ['string', 'falsy'], address);
+  } else if (address != null) {
+    validateString(address, 'address');
   }
 
   healthCheck(this);