[hackers] [slstatus] uptime: Use sizeof instead of repeating the size || planet36

[git]

commit 40f13be551f0e1a0eaee07dcb64b3b6ab3a68dd9
Author:     planet36 <plane...@users.noreply.github.com>
AuthorDate: Thu Mar 25 13:05:48 2021 -0400
Commit:     drkhsh <m...@drkhsh.at>
CommitDate: Mon Dec 19 02:44:21 2022 +0100

    uptime: Use sizeof instead of repeating the size
    
    Signed-off-by: drkhsh <m...@drkhsh.at>

diff --git a/components/uptime.c b/components/uptime.c
index d97e5e8..6227f73 100644
--- a/components/uptime.c
+++ b/components/uptime.c
@@ -22,7 +22,7 @@ uptime(const char *unused)
        struct timespec uptime;
 
        if (clock_gettime(UPTIME_FLAG, &uptime) < 0) {
-               snprintf(warn_buf, 256, "clock_gettime %d", UPTIME_FLAG);
+               snprintf(warn_buf, sizeof(warn_buf), "clock_gettime %d", 
UPTIME_FLAG);
                warn(warn_buf);
                return NULL;
        }