[parser] Clear scope for inner block in function with complex parameters

src/parsing/parser-base.h

Index: src/parsing/parser-base.h
diff --git a/src/parsing/parser-base.h b/src/parsing/parser-base.h
index acea162a003c06bbe58299b2bbdb3e079d46ecd0..09754487ca6fe1f626479a3cad81da4963c0de8b 100644
--- a/src/parsing/parser-base.h
+++ b/src/parsing/parser-base.h
@@ -4046,6 +4046,8 @@ void ParserBase<Impl>::ParseFunctionBody(
     if (inner_scope->FinalizeBlockScope() != nullptr) {
       impl()->CheckConflictingVarDeclarations(inner_scope, CHECK_OK_VOID);
       impl()->InsertShadowingVarBindingInitializers(inner_block);
+    } else {
+      inner_block->set_scope(nullptr);
     }
     inner_scope = nullptr;