Simplify function

src/org/org_types.nim

@@ -100,10 +100,9 @@ type
       headlineContent*: seq[OrgInlineBlock]
       headlineChildrenText*: string
 
-const INDENT_SIZE = 2;
-
-func stringifySpecialFields(x: OrgBlock, indent = 0): string =
-  @[
+proc `$`*(x: OrgBlock, indent = 0): string =
+  let fieldIndent = indent + INDENT_SIZE
+  let fields = @[
     ("kind", $x.kind, true),
     ("level", $x.level, true),
     ("todo", $x.todo, x.todo.isSome()),
@@ -113,12 +112,9 @@ func stringifySpecialFields(x: OrgBlock, indent = 0): string =
   ]
   .stringifyFields()
 
-proc `$`*(x: OrgBlock, indent = 0): string =
-  let fieldIndent = indent + INDENT_SIZE
-
   @[
     "OrgBlock(",
-    stringifySpecialFields(x).indent(fieldIndent),
+    fields.indent(fieldIndent),
     ")",
   ]
   .join("\n")