Avoid accidental global leakage.

src/item/HitResult.js

@@ -17,7 +17,7 @@
  * test. It is returned by {@link Item#hitTest(point)} and
  * {@link Project#hitTest(point)}.
  */
-HitResult = Base.extend(/** @lends HitResult# */{
+var HitResult = this.HitResult = Base.extend(/** @lends HitResult# */{
 	initialize: function(type, item, values) {
 		this.type = type;
 		this.item = item;

src/path/Curve.js

@@ -602,7 +602,7 @@ statics: {
 		// same quadratic roots.
 		var a = 3 * (v1 - v2) - v0 + v3,
 			b = 2 * (v0 + v2) - 4 * v1,
-			c = v1 - v0;
+			c = v1 - v0,
 			count = Numerical.solveQuadratic(a, b, c, roots,
 					/*#=*/ Numerical.TOLERANCE),
 			// Add some tolerance for good roots, as t = 0 / 1 are added

src/path/CurveLocation.js

@@ -26,7 +26,7 @@
  * {@link PathItem#getIntersections(path)},
  * etc.
  */
-CurveLocation = Base.extend(/** @lends CurveLocation# */{
+var CurveLocation = this.CurveLocation = Base.extend(/** @lends CurveLocation# */{
 	// DOCS: CurveLocation class description: add these back when the  mentioned
 	// functioned have been added: {@link Path#split(location)}
 	/**