fixup! Conf: use canonical textual form for IP identifiers.

Author: bavshin-f5

src/conf/order.rs

@@ -254,8 +254,10 @@ where
     }
 }
 
-/// Checks if the value is an IP address and returns a canonical representation of the address,
-/// reallocated on the configuration pool if necessary.
+/// Attempts to parse the value as an IP address, returning `Some(...)` on success.
+///
+/// The address will be converted to a canonical textual form and reallocated on the
+/// configuration pool if necessary.
 fn parse_ip_identifier(
     cf: &ngx_conf_t,
     value: &'static str,
@@ -281,6 +283,7 @@ fn parse_ip_identifier(
     out.try_reserve_exact(buf.len()).map_err(|_| AllocError)?;
     out.extend_from_slice(buf);
     // SAFETY: formatted IpAddr is always a valid ASCII string.
+    // The buffer is owned by the ngx_pool_t and does not leak.
     let out = unsafe { core::str::from_utf8_unchecked(out.leak()) };
 
     Ok(Some(out))