Avoid endless recursion in __extendhfsf2

On some platforms the conversion ended up creating a dangerous recursive
loop that ate all the stack.

The conversion to f16 is also pointless since we're operating on the raw
bits anyway.
4ab7b459dfLemonBoy committed on 5/7/2019, 9:47:23 AMparent94b504c
1 file changedLine totals unavailable