[ast] Fix typo in {Scope::set_asm_function} method.

src/ast/scopes.h

Index: src/ast/scopes.h
diff --git a/src/ast/scopes.h b/src/ast/scopes.h
index 865198e58e58f5bdf36f4aa7ad51ded384342afd..d5291183dd7726e8ed3abeca2e7dff7952982761 100644
--- a/src/ast/scopes.h
+++ b/src/ast/scopes.h
@@ -624,7 +624,7 @@ class DeclarationScope : public Scope {
   bool asm_module() const { return asm_module_; }
   void set_asm_module();
   bool asm_function() const { return asm_function_; }
-  void set_asm_function() { asm_module_ = true; }
+  void set_asm_function() { asm_function_ = true; }
 
   void DeclareThis(AstValueFactory* ast_value_factory);
   void DeclareArguments(AstValueFactory* ast_value_factory);