HT-320: Attempt to prevent "The SLDR has already been initialized"
HT-320: Attempt to prevent "The SLDR has already been initialized"

I can't reproduce the problem, so I don't know if this will help, but it seems to be a more reliable check and it slightly simplifies the code in HearThis.

sillsdev/hearthis,sillsdev/hearthis,sillsdev/hearthis