PATCH: fixed delivery of UTF-8 strings via OSC

When sending strings via OSC that contain non-ASCII characters, “OSC input stream format error: missing padding zeros” was thrown in the OSCReceiver. This patch fixes this problem:

And while we’re at it, please consider my other OSC related patch that passes the sender IP and port to the OSC-receiver callbacks so that one can send replies:
GitHub Pull Request
Forum Entry