fix(fromEvent): pass options in unsubscribe

spec/observables/fromEvent-spec.ts

@@ -132,16 +132,17 @@ describe('fromEvent', () => {
     });
   });
 
-  it('should pass through options to addEventListener', () => {
-    let actualOptions;
+  it('should pass through options to addEventListener and removeEventListener', () => {
+    let onOptions;
+    let offOptions;
     const expectedOptions = { capture: true, passive: true };
 
     const obj = {
       addEventListener: (a: string, b: EventListenerOrEventListenerObject, c?: any) => {
-        actualOptions = c;
+        onOptions = c;
       },
       removeEventListener: (a: string, b: EventListenerOrEventListenerObject, c?: any) => {
-        //noop
+        offOptions = c;
       }
     };
 
@@ -152,7 +153,8 @@ describe('fromEvent', () => {
 
     subscription.unsubscribe();
 
-    expect(actualOptions).to.equal(expectedOptions);
+    expect(onOptions).to.equal(expectedOptions);
+    expect(offOptions).to.equal(expectedOptions);
   });
 
   it('should pass through events that occur', (done: MochaDone) => {

src/internal/observable/fromEvent.ts

@@ -166,7 +166,7 @@ function setupSubscription<T>(sourceObj: EventTargetLike, eventName: string,
   } else if (isEventTarget(sourceObj)) {
     const source = sourceObj;
     sourceObj.addEventListener(eventName, handler as EventListener, options);
-    unsubscribe = () => source.removeEventListener(eventName, handler as EventListener);
+    unsubscribe = () => source.removeEventListener(eventName, handler as EventListener, options);
   } else if (isJQueryStyleEventEmitter(sourceObj)) {
     const source = sourceObj;
     sourceObj.on(eventName, handler);