### Please describe the problem.

Git-annex commit f0754a61f doesn't compile on Windows without a small patch.

### What steps will reproduce the problem?

`stack setup && stack build`

### What version of git-annex are you using? On what operating system?

[[!format sh """
git-annex version: 8.20210804-gf0754a61f
build flags: Assistant Webapp Pairing TorrentParser Feeds Testsuite S3 WebDAV
dependency versions: aws-0.22 bloomfilter-2.0.1.0 cryptonite-0.26 DAV-1.3.4 feed-1.3.0.1 ghc-8.8.4 http-client-0.6.4.1 persistent-sqlite-2.10.6.2 torrent-10000.1.1 uuid-1.3.13 yesod-1.6.1.0
key/value backends: SHA256E SHA256 SHA512E SHA512 SHA224E SHA224 SHA384E SHA384 SHA3_256E SHA3_256 SHA3_512E SHA3_512 SHA3_224E SHA3_224 SHA3_384E SHA3_384 SKEIN256E SKEIN256 SKEIN512E SKEIN512 BLAKE2B256E BLAKE2B256 BLAKE2B512E BLAKE2B512 BLAKE2B160E BLAKE2B160 BLAKE2B224E BLAKE2B224 BLAKE2B384E BLAKE2B384 BLAKE2BP512E BLAKE2BP512 BLAKE2S256E BLAKE2S256 BLAKE2S160E BLAKE2S160 BLAKE2S224E BLAKE2S224 BLAKE2SP256E BLAKE2SP256 BLAKE2SP224E BLAKE2SP224 SHA1E SHA1 MD5E MD5 WORM URL X*
remote types: git gcrypt p2p S3 bup directory rsync web bittorrent webdav adb tahoe glacier ddar git-lfs httpalso borg hook external
operating system: mingw32 x86_64
supported repository versions: 8
upgrade supported from repository versions: 2 3 4 5 6 7
"""]]

Windows 10 version 21H1 (build 19043.1165), 64 bit.

### Please provide any additional information below.

Relevant parts of the build log:

[[!format sh """
jkniiv@AINESIS MINGW64 /c/annx
$ tail -n 25 /c/Projektit/git-annex.branchable.com/git-annex--BUILD-210817-f0754a61f/stack.build.LOG~102
[343 of 665] Compiling Annex.CheckIgnore
[344 of 665] Compiling Annex.CheckAttr
[345 of 665] Compiling Backend
[346 of 665] Compiling Annex.Verify

Annex\Verify.hs:129:22: error:
    Not in scope: `S.hGetSome'
    No module named `S' is imported.
    |
129 |                 b <- S.hGetSome h chunk

    |                      ^^^^^^^^^^

Annex\Verify.hs:130:20: error:
    Not in scope: `S.null'
    No module named `S' is imported.
    |
130 |                 if S.null b

    |                    ^^^^^^


--  While building package git-annex-8.20210803 (scroll up to its section to see the error) using:
      C:\Users\jkniiv\Projektit\git-annex.branchable.com\git-annex--BUILD-210817-f0754a61f\.stack-work\dist\29cc6475\setup\setup --builddir=.stack-work\dist\29cc6475 build exe:git-annex --ghc-options " -fdiagnostics-color=always"
    Process exited with code: ExitFailure 1

# End of transcript.
"""]]

The change I made was with an import, as follows:

[[!format diff """
diff --git a/Annex/Verify.hs b/Annex/Verify.hs
index c41a793f6..ad9866800 100644
--- a/Annex/Verify.hs
+++ b/Annex/Verify.hs
@@ -33,9 +33,9 @@ import Types.WorkerPool
 import Types.Key

 import Control.Concurrent.STM
+import qualified Data.ByteString as S
 #if WITH_INOTIFY
 import qualified System.INotify as INotify
-import qualified Data.ByteString as S
 import qualified System.FilePath.ByteString as P
 #endif

"""]]

This then compiled cleanly and completed the test suite ok.

### Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)

Git Annex is great. It works quite nicely with my multi-gigabyte backup files (largest around 180GB) via the BLAKE2B160E backend :)

> [[fixed|done]] --[[Joey]]
