reverted to strdup() back

diff --git a/libasn1parser/Makefile.in b/libasn1parser/Makefile.in
index 1f29cf7..cb9ebd0 100644
--- a/libasn1parser/Makefile.in
+++ b/libasn1parser/Makefile.in
@@ -447,8 +447,8 @@
 maintainer-clean-generic:
 	@echo "This command is intended for maintainers to use"
 	@echo "it deletes files that may require special tools to rebuild."
-	-rm -f asn1p_y.c
 	-rm -f asn1p_l.c
+	-rm -f asn1p_y.c
 	-rm -f asn1p_y.h
 clean: clean-am