From 91ce42f008764c3c6d8d72c5fb3b72d0945b7de2 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 20 Apr 2023 18:46:55 +0200
Subject: [PATCH] parse-util: allow parse_pid() to work with NULL return
 parameter

That way the function becomes useful for validating pids formatted as
strings.
---
 src/basic/parse-util.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/basic/parse-util.c b/src/basic/parse-util.c
index 3445d31307..a53cbc73b8 100644
--- a/src/basic/parse-util.c
+++ b/src/basic/parse-util.c
@@ -50,7 +50,6 @@ int parse_pid(const char *s, pid_t* ret_pid) {
         int r;
 
         assert(s);
-        assert(ret_pid);
 
         r = safe_atolu(s, &ul);
         if (r < 0)
@@ -64,7 +63,8 @@ int parse_pid(const char *s, pid_t* ret_pid) {
         if (!pid_is_valid(pid))
                 return -ERANGE;
 
-        *ret_pid = pid;
+        if (ret_pid)
+                *ret_pid = pid;
         return 0;
 }