fix(spawnify) unicodify do not returns a function

Author: coderaiser

lib/spawnify.js

@@ -191,7 +191,7 @@ Spawnify.prototype._setListeners = function setListeners(child) {
 
     if (child.stdout) {
         child.stdout
-            .pipe(win.unicodify())
+            .pipe(win.unicodify)
             .setEncoding('utf8')
             .on('data', (data) => {
                 this._emit('data', data);