1.5 - dsprintf assertion failure

I'm getting an assertfatal with dsprintf.

This is happening when I try to write, for example, 18 characters into an 18 character buffer.

I notice there's a new assertion added at line 301 of winStrings.cc that reads:

AssertFatal( len < bufferSize, "dSprintf wrote to more memory than the specified buffer size - Stack Corruption Possible" ); //Added

should the '<' not be a '<=' ??

(if I change the buffer size to 19 and write 18 chars to it, it's fine);