Snippets for portaudio 190700_20210406 from Nix aarch64-darwin

Sourced from https://hydra.nixos.org/log/bfjp8931k2kdp5irpv1h7rsg81g9xqb6-portaudio-190700_20210406.drv.

src/common/pa_converters.c:350:32: warning: implicit conversion from 'int' to 'float' changes value from 2147483647 to 2147483648 [-Wimplicit-const-int-float-conversion]
  350 |         double scaled = *src * 0x7FFFFFFF;
      |                              ~ ^~~~~~~~~~

src/common/pa_converters.c:407:32: warning: implicit conversion from 'int' to 'float' changes value from 2147483647 to 2147483648 [-Wimplicit-const-int-float-conversion]
  407 |         double scaled = *src * 0x7FFFFFFF;
      |                              ~ ^~~~~~~~~~

src/common/pa_converters.c:535:32: warning: implicit conversion from 'int' to 'float' changes value from 2147483647 to 2147483648 [-Wimplicit-const-int-float-conversion]
  535 |         double scaled = *src * 0x7FFFFFFF;
      |                              ~ ^~~~~~~~~~