Use an early return.

If there's nothing to do, returning early saves an indentation
level and reduces the amount of state one needs to track reading
the code.

Author: rillian

src/librustc_trans/back/link.rs

@@ -826,15 +826,17 @@ fn link_staticlib(sess: &Session, objects: &[PathBuf], out_filename: &Path,
 }
 
 fn report_link_line(sess: &Session, native_libs: Vec<(NativeLibraryKind, String)>) {
-    if !native_libs.is_empty() {
-        sess.note_without_error(
-            "link against the following native artifacts when linking against \
-                                 this static library");
-        sess.note_without_error(
-            "the order and any duplication can be significant on some \
-                                 platforms, and so may need to be preserved");
+    if native_libs.is_empty() {
+        return;
     }
 
+    sess.note_without_error(
+        "link against the following native artifacts when linking against \
+                             this static library");
+    sess.note_without_error(
+        "the order and any duplication can be significant on some \
+                             platforms, and so may need to be preserved");
+
     for &(kind, ref lib) in &native_libs {
         let name = match kind {
             NativeLibraryKind::NativeStatic => "static library",