Just move the set_limits function up

src/main.rs

@@ -511,6 +511,26 @@ fn privdrop(config: &Config) -> Result<(), Error> {
     Ok(())
 }
 
+#[cfg(not(target_family = "unix"))]
+fn set_limits(config: &Config) -> Result<(), Error> {
+    Ok(())
+}
+
+#[cfg(target_family = "unix")]
+fn set_limits(config: &Config) -> Result<(), Error> {
+    use rlimit::Resource;
+    let nb_descriptors = 2u32
+        .saturating_mul(
+            config
+                .tcp_max_active_connections
+                .saturating_add(config.udp_max_active_connections)
+                .saturating_add(config.listen_addrs.len() as u32),
+        )
+        .saturating_add(16);
+    Resource::NOFILE.set(nb_descriptors as _, nb_descriptors as _)?;
+    Ok(())
+}
+
 fn main() -> Result<(), Error> {
     env_logger::Builder::from_default_env()
         .write_style(env_logger::WriteStyle::Never)
@@ -790,23 +810,3 @@ fn main() -> Result<(), Error> {
     time_updater.stop()?;
     Ok(())
 }
-
-#[cfg(not(target_family = "unix"))]
-fn set_limits(config: &Config) -> Result<(), Error> {
-    Ok(())
-}
-
-#[cfg(target_family = "unix")]
-fn set_limits(config: &Config) -> Result<(), Error> {
-    use rlimit::Resource;
-    let nb_descriptors = 2u32
-        .saturating_mul(
-            config
-                .tcp_max_active_connections
-                .saturating_add(config.udp_max_active_connections)
-                .saturating_add(config.listen_addrs.len() as u32),
-        )
-        .saturating_add(16);
-    Resource::NOFILE.set(nb_descriptors as _, nb_descriptors as _)?;
-    Ok(())
-}