fs/procfs: Avoid the cast in uptime_read
@@ -250,7 +250,7 @@ static ssize_t uptime_read(FAR struct file *filep, FAR char *buffer,
"%7" PRIu64 ".%02u\n", sec, csec);
#else
linesize = procfs_snprintf(attr->line, UPTIME_LINELEN,
- "%7lu.%02u\n", (unsigned long)sec, csec);
+ "%7" PRIu32 ".%02u\n", sec, csec);
#endif
#endif
