[bug] FDS modulator overflow in NSF export

[galap-1]

In the tracker, when using the automatic FM effect would produce a modulation rate over the maximum i.e. greater than $4806 = $FF and &4807 = $0F, they just get set to the maximum of $FF and $0F respectively, When exporting to NSF, however, the values overflow and wrap around to lower, incorrect values. This bug has been present since 0cc, but I figured that I'd mention it here again. I've attached 0cc and NSF files that succinctly demonstrate the bug.
fds.bug.zip