softfloat: Inline pickNaNMulAdd

Inline pickNaNMulAdd into its only caller.  This makes
one assert redundant with the immediately preceding IF.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20241203203949.483774-3-richard.henderson@linaro.org
[PMM: keep comment from old code in new location]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2 files changed