Blindly try to fix test script's tar invocation for MSYS.
Buildfarm member fairywren doesn't like the test case I added
in commit  I'm guessing the reason is that I shouldn't
be using a perl2host-ified path in the tar command line.
@@ -270,9 +270,10 @@ SKIP:
$node2->init_from_backup($node, 'tarbackup2', tar_program => $tar);
# Recover tablespace into a new directory (not where it was!)
- mkdir "$tempdir/tblspc1replica";
+ my $repTsDir = "$tempdir/tblspc1replica";
my $realRepTsDir = TestLib::perl2host("$shorter_tempdir/tblspc1replica");
- TestLib::system_or_bail($tar, 'xf', $tblspc_tars[0], '-C', $realRepTsDir);
+ mkdir $repTsDir;
+ TestLib::system_or_bail($tar, 'xf', $tblspc_tars[0], '-C', $repTsDir);
# Update tablespace map to point to new directory.
# XXX Ideally pg_basebackup would handle this.
