Rewrite function definitions with identifier lists

This syntax is removed in C2x proposal N2432.

Test: presubmit
Change-Id: Ic1309841423143e48513dd8b67166b4fde2d67fb
diff --git a/libc/dns/resolv/res_send.c b/libc/dns/resolv/res_send.c
index fa81e6d..a95997d 100644
--- a/libc/dns/resolv/res_send.c
+++ b/libc/dns/resolv/res_send.c
@@ -680,8 +680,7 @@
 /* Private */
 
 static int
-get_salen(sa)
-	const struct sockaddr *sa;
+get_salen(const struct sockaddr *sa)
 {
 
 #ifdef HAVE_SA_LEN
@@ -702,9 +701,7 @@
  * pick appropriate nsaddr_list for use.  see res_init() for initialization.
  */
 static struct sockaddr *
-get_nsaddr(statp, n)
-	res_state statp;
-	size_t n;
+get_nsaddr(res_state statp, size_t n)
 {
 
 	if (!statp->nsaddr_list[n].sin_family && EXT(statp).ext) {