maint: add list/obstack.h to .gitignore

Following recent gnulib update

diff --git a/.gitignore b/.gitignore
index 93abb8e1821c52761ab0075d815198551d0620db..955dd600c8d160ee198d90b6f06ed2ac0b329885 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -87,6 +87,7 @@
 /lib/math.h
 /lib/netdb.h
 /lib/netinet/in.h
+/lib/obstack.h
 /lib/parse-datetime-gen.h
 /lib/parse-datetime.c
 /lib/poll.h