criu: don't call close() for a negative value

CID 73358 (#1 of 1): Improper use of negative value (NEGATIVE_RETURNS)
8. negative_returns: sk is passed to a parameter that cannot be negative. [hide details]

criu/kerndat.c

@@ -495,7 +495,7 @@ int kerndat_fdinfo_has_lock()
 
 	exit_code = 0;
 out:
-	close(pfd);
+	close_safe(&pfd);
 	close(fd);
 
 	return exit_code;
@@ -770,7 +770,7 @@ int kerndat_has_ns_get_parent(void)
 	p_ns = ioctl(ns, NS_GET_PARENT);
 	if (p_ns >= 0 || errno == EPERM) {
 		kdat.has_ns_get_parent = true;
-		close(p_ns);
+		close_safe(&p_ns);
 	}
 
 	close(ns);

criu/sk-netlink.c

@@ -245,7 +245,7 @@ static int open_netlink_sk(struct file_desc *d, int *new_fd)
 	*new_fd = sk;
 	return 0;
 err:
-	close(sk);
+	close_safe(&sk);
 	return -1;
 }
 

criu/util.c

@@ -1368,7 +1368,7 @@ int run_tcp_server(bool daemon_mode, int *ask, int cfd, int sk)
 
 	return 0;
 out:
-	close(sk);
+	close_safe(&sk);
 	return -1;
 }