Prevent infinite loop when catching errors.

If an error is caught, the parser's while loop would continue
to run without advancing, as the return value of `take` would
always be true.

By always returning false, parsing will stop when an error
is raised, caught or otherwise.

Author: hughsk

lib/index.js

@@ -210,7 +210,7 @@ function parser() {
 
   function take() {
     if(errored || !state.length)
-      return errored
+      return false
 
     return (token = tokens[0]) && !stream.paused
   }