bzip2 & brotli: Fix tests with ASan

[SirLynix]

I think this should be automated by xmake, but when building a lib with ASan and testing its binaries, it will fail on Windows:

install ok!
finding bzip2 from xmake ..
checking for xmake::bzip2 ... bzip2 1.0.8
{
  libfiles = {
    "C:\Users\lynix\AppData\Local\.xmake\packages\b\bzip2\1.0.8\83ee4cf31e5841d8a38c178e6ffab69b\lib\bz2.lib"
  },
  linkdirs = {
    "C:\Users\lynix\AppData\Local\.xmake\packages\b\bzip2\1.0.8\83ee4cf31e5841d8a38c178e6ffab69b\lib"
  },
  sysincludedirs = {
    "C:\Users\lynix\AppData\Local\.xmake\packages\b\bzip2\1.0.8\83ee4cf31e5841d8a38c178e6ffab69b\include"
  },
  version = "1.0.8",
  static = true,
  links = {
    "bz2"
  }
}

patching C:\Users\lynix\AppData\Local\.xmake\packages\b\bzip2\1.0.8\83ee4cf31e5841d8a38c178e6ffab69b\lib\pkgconfig\bzip2.pc ..
bunzip2 --help
error: @programdir\core\sandbox\modules\os.lua:337: exec(bunzip2 --help) failed(-1073741515)
stack traceback:
    [C]: in function 'error'
    [@programdir\core\base\os.lua:957]:
    [@programdir\core\sandbox\modules\os.lua:337]:
    [@programdir\core\sandbox\modules\os.lua:282]: in function 'vrun'
    [...xmake\repositories\xmake-repo\packages\b\bzip2\xmake.lua:29]: in function 'script'
    [...dir\modules\private\action\require\impl\utils\filter.lua:114]: in function 'call'
    [...dir\modules\private\action\require\impl\actions\test.lua:41]:
    [...\modules\private\action\require\impl\actions\install.lua:412]:

  => install bzip2 1.0.8 .. failed
error: @programdir\core\main.lua:306: @programdir\core\sandbox\modules\import\core\base\task.lua:65: @programdir\modules\async\runjobs.lua:320: ...\modules\private\action\require\impl\actions\install.lua:474: install failed!
stack traceback:
    [C]: in function 'error'
    [@programdir\core\base\os.lua:957]:
    [...\modules\private\action\require\impl\actions\install.lua:474]: in function 'catch'
    [@programdir\core\sandbox\modules\try.lua:123]: in function 'try'
    [...\modules\private\action\require\impl\actions\install.lua:333]:
    [...modules\private\action\require\impl\install_packages.lua:487]: in function 'jobfunc'
    [@programdir\modules\async\runjobs.lua:237]:

stack traceback:
        [C]: in function 'error'
        @programdir\core\base\os.lua:957: in function 'base/os.raiselevel'
        (...tail calls...)
        @programdir\core\main.lua:306: in upvalue 'cotask'
        @programdir\core\base\scheduler.lua:406: in function <@programdir\core\base\scheduler.lua:399>

this is because it doesn't find MSVC asan DLL (which are not in the PATH).

The same issue can occur with MinGW and its libstdc++ or pthread dlls (not the case here).

So this is a temporary fix until xmake can hopefully fix this.

[waruqi]

We should not modify on_test for a temporary fix, please open an issue and wait for improvements.

[SirLynix]

Fixed by xmake-io/xmake#4879