Merge pull request PHPOffice#512 from andrey-yantsen/patch-1

Check for variable before using it

Author: Mark Baker

Classes/PHPExcel/Reader/Excel2007.php

@@ -1510,10 +1510,9 @@ public function load($pFilename)
 													$objDrawing->setOffsetY(PHPExcel_Shared_Drawing::EMUToPixels($twoCellAnchor->from->rowOff));
 													$objDrawing->setResizeProportional(false);
 
-													$objDrawing->setWidth(PHPExcel_Shared_Drawing::EMUToPixels(self::array_item($xfrm->ext->attributes(), "cx")));
-													$objDrawing->setHeight(PHPExcel_Shared_Drawing::EMUToPixels(self::array_item($xfrm->ext->attributes(), "cy")));
-
 													if ($xfrm) {
+														$objDrawing->setWidth(PHPExcel_Shared_Drawing::EMUToPixels(self::array_item($xfrm->ext->attributes(), "cx")));
+														$objDrawing->setHeight(PHPExcel_Shared_Drawing::EMUToPixels(self::array_item($xfrm->ext->attributes(), "cy")));
 														$objDrawing->setRotation(PHPExcel_Shared_Drawing::angleToDegrees(self::array_item($xfrm->attributes(), "rot")));
 													}
 													if ($outerShdw) {