fix linting issues

[thaJeztah]

• relates to Fix deadlock when closing pipe #324 (comment)

[thaJeztah]

cc @kevpar if you have permissions to kick CI ❤️

[katiewasnothere]

@thaJeztah It looks like the CI is still failing

[thaJeztah]

Yeah, I noticed; I suspect the other failures may also be with newer go versions, or updated golangci-lint.

I think they're all about integer conversion in generated code; haven't checked if they can be ignored (temporarily) or need fixing;

mode=readonly] in [] ...
  ::high file=wim/lzx/lzx.go,line=137,col=13::G115: integer overflow conversion uint32 -> uint16 (gosec)
  ::high file=wim/lzx/lzx.go,line=191,col=26::G115: integer overflow conversion uint -> uint16 (gosec)
  ::high file=wim/lzx/lzx.go,line=200,col=38::G115: integer overflow conversion int -> uint16 (gosec)
  ::high file=wim/lzx/lzx.go,line=376,col=20::G115: integer overflow conversion uint32 -> uint16 (gosec)
  ::high file=wim/lzx/lzx.go,line=377,col=20::G115: integer overflow conversion uint32 -> uint16 (gosec)
  ::high file=wim/lzx/lzx.go,line=378,col=20::G115: integer overflow conversion uint32 -> uint16 (gosec)
  ::high file=wim/lzx/lzx.go,line=526,col=51::G115: integer overflow conversion int -> uint16 (gosec)