fixing issue: error: implicit conversion turns floating-point number into integer: 'const Float64' (aka 'const double') to 'ma_uint32' (aka 'unsigned int') [-Werror,-Wfloat-conversion]

This reverts the following commits:

d46e19fb
  "PulseAudio: Attempt to fix a deadlock."

61586de2
  "PulseAudio: Default to a blocking main loop."

Public issue https://github.com/mackron/miniaudio/issues/902

This matches the handle added for script processor node devices in #771

Public issue https://github.com/mackron/miniaudio/issues/850

Public issues
  https://github.com/mackron/miniaudio/issues/877
  https://github.com/mackron/miniaudio/issues/881

This is from c89atomic which has been fixed upstream.

Public issue https://github.com/mackron/miniaudio/issues/833

fix typos

Public issue https://github.com/mackron/miniaudio/issues/841

Public issue https://github.com/mackron/miniaudio/issues/836.