mingw: fix mingw_open_append to work with named pipes

diff --git a/t/t7506-status-submodule.sh b/t/t7506-status-submodule.sh
index 9edf6572ed3b8f04ef1169f545043fcb2e09fe21..b4b74dbe29dd53ae8029cec20be4b6fef2cd6a1e 100755 (executable)
--- a/t/t7506-status-submodule.sh
+++ b/t/t7506-status-submodule.sh
@@ -18,7 +18,7 @@ test_create_repo_with_commit () {
 }
 
 sanitize_output () {
-       sed -e "s/$_x40/HASH/" -e "s/$_x40/HASH/" output >output2 &&
+       sed -e "s/$OID_REGEX/HASH/" -e "s/$OID_REGEX/HASH/" output >output2 &&
        mv output2 output
 }