LoggingPrintStream prints "null" for null strings from print(String) but throws an NPE from println(String). Fix this by delegating to the underlying builder (and avoiding the "fast" path when the input String == null) bug: https://code.google.com/p/android/issues/detail?id=63380 Change-Id: I89c5c12db6ed5af8037d46f67369b38c5b4cbc9f