libiptc: avoid compile warnings for iptc_insert_chain

iptc_insert_chain is too big to get inlined and so it generates
a warning while compiling.

Signed-off-by: Christoph Paasch <christoph.paasch@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/libiptc/libiptc.c b/libiptc/libiptc.c
index 544a5b2..c3d9bfc 100644
--- a/libiptc/libiptc.c
+++ b/libiptc/libiptc.c
@@ -841,7 +841,7 @@
 }
 
 /* alphabetically insert a chain into the list */
-static inline void iptc_insert_chain(struct xtc_handle *h, struct chain_head *c)
+static void iptc_insert_chain(struct xtc_handle *h, struct chain_head *c)
 {
 	struct chain_head *tmp;
 	struct list_head  *list_start_pos;