restart coprocess in raw mode

Restarting a crashing git process could result in filename encoding issues
when not in a unicode locale, as the restarted processes's handles were not
read in raw mode.

Since rawMode is always used when starting a coprocess, didn't bother
to parameterise it and just always enable it for simplicity.

This commit was sponsored by Jake Vosloo on Patreon.

Git/CheckIgnore.hs

@@ -37,7 +37,7 @@ type CheckIgnoreHandle = CoProcess.CoProcessHandle
  -}
 checkIgnoreStart :: Repo -> IO (Maybe CheckIgnoreHandle)
 checkIgnoreStart repo = ifM supportedGitVersion
-	( Just <$> (CoProcess.rawMode =<< gitCoProcessStart True params repo')
+	( Just <$> gitCoProcessStart True params repo'
 	, return Nothing
 	)
   where