mingw: suggest windows.appendAtomically in more cases

When running Git for Windows on a remote APFS filesystem, it would
appear that the `mingw_open_append()`/`write()` combination would fail
almost exactly like on some CIFS-mounted shares as had been reported in
#2753, albeit with a
different `errno` value.

Let's handle that `errno` value just the same, by suggesting to set
`windows.appendAtomically=false`.

Signed-off-by: David Lomas <dl3@pale-eds.co.uk>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

compat/mingw.c

@@ -720,7 +720,7 @@ ssize_t mingw_write(int fd, const void *buf, size_t len)
 {
 	ssize_t result = write(fd, buf, len);
 
-	if (result < 0 && (errno == EINVAL || errno == ENOSPC) && buf) {
+	if (result < 0 && (errno == EINVAL || errno == EBADF || errno == ENOSPC) && buf) {
 		int orig = errno;
 
 		/* check if fd is a pipe */
@@ -746,7 +746,7 @@ ssize_t mingw_write(int fd, const void *buf, size_t len)
 			}
 
 			errno = orig;
-		} else if (orig == EINVAL)
+		} else if (orig == EINVAL || errno == EBADF)
 			errno = EPIPE;
 		else {
 			DWORD buf_size;