Merge pull request #3745 from akarnokd/Issue1685Fix

1.x: Fix the test Issue1685 not waiting long enough.

Author: akarnokd

src/test/java/rx/ObservableTests.java

@@ -1108,7 +1108,9 @@ public void uncaughtException(Thread t, Throwable e) {
             subject.subscribe();
             subject.materialize().toBlocking().first();
 
-            Thread.sleep(1000); // the uncaught exception comes after the terminal event reaches toBlocking
+            for (int i = 0; i < 20 && err.get() == null; i++) {
+                Thread.sleep(100); // the uncaught exception comes after the terminal event reaches toBlocking
+            }
 
             assertNotNull("UncaughtExceptionHandler didn't get anything.", err.get());