Fixed bug in angle tool
Fixed bug in angle tool

leonardorame/cornerstoneTools,HorizonPlatform/cornerstoneTools,chafey/cornerstoneTools,cornerstonejs/cornerstoneTools,google/cornerstoneTools,jmhmd/cornerstoneTools,cornerstonejs/cornerstoneTools,HorizonPlatform/cornerstoneTools,jmhmd/cornerstoneTools,swederik/cornerstoneTools,swederik/cornerstoneTools,cornerstonejs/cornerstoneTools,leonardorame/cornerstoneTools,google/cornerstoneTools