net: export isIPv4, isIPv6 directly from cares

The function objects encapsulating `isIPv4` and `isIPv6` are not necessary. They can be directly exposed from `cares`. PR-URL: #7481 Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Anna Henningsen <[email protected]>

Author: thefourtheye

lib/net.js

@@ -1581,14 +1581,10 @@ Server.prototype.unref = function(){
 exports.isIP=cares.isIP;
 
 
-exports.isIPv4=function(input){
-returncares.isIPv4(input);
-};
+exports.isIPv4=cares.isIPv4;
 
 
-exports.isIPv6=function(input){
-returncares.isIPv6(input);
-};
+exports.isIPv6=cares.isIPv6;
 
 
 if(process.platform==='win32'){