Fix bug in Image Control slider

Packages/ohif-viewerbase/client/components/viewer/imageControls/imageControls.js

@@ -4,7 +4,6 @@ let slideTimeout;
 Template.imageControls.onRendered(() => {
     const instance = Template.instance();
 
-    Meteor.defer(() => {
     // Set the current imageSlider width to its parent's height
     // (because webkit is stupid and can't style vertical sliders)
     const $slider = instance.$('#imageSlider');
@@ -12,7 +11,6 @@ Template.imageControls.onRendered(() => {
     const viewportHeight = $element.height();
 
     $slider.width(viewportHeight - 20);
-    });
 })
 
 Template.imageControls.events({