No redundant space after empty return (#6745)

* Remove redundant space after return

* Update test complied files

* Update changelog

Author: DZakh

CHANGELOG.md

@@ -26,6 +26,7 @@
 #### :nail_care: Polish
 
 - Make the `--help` arg be prioritized in the CLI, so correctly prints help message and skip other commands. https://github.com/rescript-lang/rescript-compiler/pull/6667
+- Remove redundant space for empty return in generated js code. https://github.com/rescript-lang/rescript-compiler/pull/6745
 - Remove redundant space for export in generated js code. https://github.com/rescript-lang/rescript-compiler/pull/6560
 
 # 11.1.0

jscomp/core/js_dump.ml

@@ -1205,7 +1205,7 @@ and statement_desc top cxt f (s : J.statement_desc) : cxt =
           semi f;
           cxt
       | Undefined _ ->
-          return_sp f;
+          P.string f L.return;
           semi f;
           cxt
       | _ ->