c36fc8beb90b07a8fa251babf6986437fd402a09,plugins/ui-designer/src/com/intellij/uiDesigner/designSurface/DesignDropTargetListener.java,DesignDropTargetListener,drop,#DropTargetDropEvent#,197
Before Change
public void drop(final DropTargetDropEvent dtde) {
try {
myComponentTree.setDropTargetComponent(null);
final DraggedComponentList dcl = DraggedComponentList.fromTransferable(dtde.getTransferable());
After Change
public void drop(final DropTargetDropEvent dtde) {
try {
if (myComponentTree != null) {
myComponentTree.setDropTargetComponent(null);
}