style(ngStyle): fix indentation

Author: itchyny

src/ng/directive/ngStyle.js

@@ -55,9 +55,9 @@ var ngStyleDirective = ngDirective(function(scope, element, attr) {
   scope.$watchCollection(attr.ngStyle, function ngStyleWatchAction(newStyles, oldStyles) {
     if (oldStyles && (newStyles !== oldStyles)) {
       forEach(oldStyles, function(val, style) {
-          if (!(newStyles && newStyles.hasOwnProperty(style))) {
-              element.css(style, '');
-          }
+        if (!(newStyles && newStyles.hasOwnProperty(style))) {
+          element.css(style, '');
+        }
       });
     }
     if (newStyles) element.css(newStyles);