Improved error handling for struct types

lib/sys/net_linux.q

@@ -13,7 +13,7 @@ accept(fd Int, address Pointer, length Int) -> Int {
 	return syscall(43, fd, address, length)
 }
 
-bind(fd Int, address Pointer, length Int) -> Int {
+bind(fd Int, address *sockaddr_in, length Int) -> Int {
 	return syscall(49, fd, address, length)
 }