clear compiling warning

Plan C requested to merge hubenchang0515/pulseaudio:master into master
  • remoev the define of shadow variables
    some local variables have same name

  • remove the warning logical 'and' of equal expressions

if (flags != O_RDONLY
        && flags != (O_RDONLY|O_LARGEFILE)
  • add option -Wno-nonnull-compare some function use the __nonnull ((1)) and do NULL compare
Edited by Plan C

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