sctp: remove the typedef sctp_operr_chunk_t

This patch is to remove the typedef sctp_operr_chunk_t, and
replace with struct sctp_operr_chunk in the places where it's
using this typedef.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/sctp.h b/include/linux/sctp.h
index d35bdd3..07c12e9 100644
--- a/include/linux/sctp.h
+++ b/include/linux/sctp.h
@@ -433,10 +433,10 @@ struct sctp_errhdr {
 	__u8  variable[0];
 };
 
-typedef struct sctp_operr_chunk {
+struct sctp_operr_chunk {
 	struct sctp_chunkhdr chunk_hdr;
 	struct sctp_errhdr err_hdr;
-} sctp_operr_chunk_t;
+};
 
 /* RFC 2960 3.3.10 - Operation Error
  *