Correct test

As written, the test behavior and description do not match--the `throw`
invocation takes place while generator execution is paused *within* the
`try..catch` statement (not following it).

Ensure that the test exercises the described behavior (and remove
extraneous invocation of method under test).

test/built-ins/GeneratorPrototype/throw/try-catch-following-catch.js

@@ -8,10 +8,12 @@ description: >
     location in the function body.
 ---*/
 
+var obj = {};
 function* g() {
   yield 1;
   try {
     yield 2;
+    throw obj;
   } catch (e) {
     yield e;
   }
@@ -29,9 +31,14 @@ result = iter.next();
 assert.sameValue(result.value, 2, 'Second result `value`');
 assert.sameValue(result.done, false, 'Second result `done` flag');
 
-result = iter.throw(exception);
+result = iter.next();
-assert.sameValue(result.value, exception, 'Third result `value`');
+assert.sameValue(result.value, obj, 'Third result `value`');
 assert.sameValue(result.done, false, 'Third result `done` flag');
+
+result = iter.next();
+assert.sameValue(result.value, 3, 'Fourth result `value`');
+assert.sameValue(result.done, false, 'Fourth result `done` flag');
+
 assert.throws(Test262Error, function() { iter.throw(new Test262Error()); });
 
 result = iter.next();