net.c: rename printsock to decode_sockaddr

* defs.h (printsock): Rename to decode_sockaddr.
* net.c (printsock): Likewise.
(do_msghdr, SYS_FUNC(bind), do_sockname, SYS_FUNC(sendto),
SYS_FUNC(recvfrom)): Replace printsock with decode_sockaddr.
diff --git a/defs.h b/defs.h
index 1d12e66..c792193 100644
--- a/defs.h
+++ b/defs.h
@@ -655,7 +655,7 @@
 extern bool print_sockaddr_by_inode(const unsigned long, const enum sock_proto);
 extern bool print_sockaddr_by_inode_cached(const unsigned long);
 extern void print_dirfd(struct tcb *, int);
-extern int printsock(struct tcb *, long, int);
+extern int decode_sockaddr(struct tcb *, long, int);
 #ifdef ALPHA
 extern void printrusage32(struct tcb *, long);
 extern const char *sprint_timeval32(struct tcb *tcp, long);