Fixing Issue #513

Author: mattpodwysocki

dist/rx.all.compat.js

@@ -9930,7 +9930,7 @@
     inherits(AnonymousSubject, __super__);
 
     function subscribe(observer) {
-      this.observable.subscribe(observer);
+      return this.observable.subscribe(observer);
     }
 
     function AnonymousSubject(observer, observable) {

dist/rx.all.compat.map

@@ -9673,7 +9673,7 @@
     inherits(AnonymousSubject, __super__);
 
     function subscribe(observer) {
-      this.observable.subscribe(observer);
+      return this.observable.subscribe(observer);
     }
 
     function AnonymousSubject(observer, observable) {

dist/rx.all.compat.min.js

@@ -4917,7 +4917,7 @@
     inherits(AnonymousSubject, __super__);
 
     function subscribe(observer) {
-      this.observable.subscribe(observer);
+      return this.observable.subscribe(observer);
     }
 
     function AnonymousSubject(observer, observable) {

dist/rx.all.js

@@ -4728,7 +4728,7 @@
     inherits(AnonymousSubject, __super__);
 
     function subscribe(observer) {
-      this.observable.subscribe(observer);
+      return this.observable.subscribe(observer);
     }
 
     function AnonymousSubject(observer, observable) {