ScaleManager.getParentBounds now checks if parentNode has an offsetParent before calling getBoundingClientRect on it (thanks @McFarts phaserjs#2134)

Author: photonstorm

README.md

@@ -307,6 +307,7 @@ can be controlled per-input mode.
 * The ScaleManager no longer creates a Phaser.FlexGrid if the class isn't available (i.e. excluded via a custom build)
 * Time.suggestedFps is now defaulted to Time.desiredFps for the first few frames until things have settled down (previously it was `null`) (thanks @noidexe #2130)
 * Text with anchor 0.5 and word wrap would have an extra space added to its width calculations, this is now adjusted for (thanks @nickryall #2052 #1990)
+* ScaleManager.getParentBounds now checks if `parentNode` has an `offsetParent` before calling `getBoundingClientRect` on it (thanks @McFarts #2134)
 
 ### Bug Fixes
 

src/core/ScaleManager.js

@@ -1421,7 +1421,7 @@ Phaser.ScaleManager.prototype = {
         {
             // Ref. http://msdn.microsoft.com/en-us/library/hh781509(v=vs.85).aspx for getBoundingClientRect
             var clientRect = parentNode.getBoundingClientRect();
-            var parentRect = parentNode.offsetParent.getBoundingClientRect();
+            var parentRect = (parentNode.offsetParent) ? parentNode.offsetParent.getBoundingClientRect() : parentNode.getBoundingClientRect();
 
             bounds.setTo(clientRect.left - parentRect.left, clientRect.top - parentRect.top, clientRect.width, clientRect.height);