sequencer.c: unify an error message

Change an error message in sequencer.c for the case that
we could not write to a file to match other instances.

Signed-off-by: Ralf Thielow <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: ralfth

sequencer.c

@@ -2926,7 +2926,7 @@ int rearrange_squash(void)
 		if (fd < 0)
 			res = error_errno(_("could not open '%s'"), todo_file);
 		else if (write(fd, buf.buf, buf.len) < 0)
-			res = error_errno(_("could not write '%s'"), todo_file);
+			res = error_errno(_("could not write to '%s'"), todo_file);
 		else if (ftruncate(fd, buf.len) < 0)
 			res = error_errno(_("could not truncate '%s'"),
 					   todo_file);