windows: use raw string in test log paths
Otherwise the backslashes will work as escapes on Windows and break everything.
Differential Revision: https://phab.mercurial-scm.org/D11725
--- a/tests/test-fix.t Fri Oct 29 14:40:46 2021 +0200
+++ b/tests/test-fix.t Fri Oct 22 09:45:35 2021 +0200
@@ -1785,7 +1785,7 @@
$ cat >> $LOGGER <<EOF
> # Appends the input file's name to the log file.
> import sys
- > with open('$LOGFILE', 'a') as f:
+ > with open(r'$LOGFILE', 'a') as f:
> f.write(sys.argv[1] + '\n')
> sys.stdout.write(sys.stdin.read())
> EOF