fix if instruction execution

src/Language/Wasm/Interpreter.hs

@@ -581,7 +581,7 @@ eval store FunctionInstance { funcType, moduleInstance, code = Function { localT
             let expr = if v /= 0 then true else false
             res <- go ctx { labels = Label resType : labels ctx, stack = rest } expr
             case res of
-                Break 0 r EvalCtx{ locals = ls } -> return $ Done ctx { locals = ls, stack = r ++ stack ctx }
+                Break 0 r EvalCtx{ locals = ls } -> return $ Done ctx { locals = ls, stack = r ++ rest }
                 Break n r ctx' -> return $ Break (n - 1) r ctx'
                 command -> return command
         step ctx@EvalCtx{ stack, labels } (Br label) = do

tests/Test.hs

@@ -34,7 +34,7 @@ compile file = do
 main :: IO ()
 main = do
   files <- Directory.listDirectory "tests/samples"
-  -- let files = ["tee_local.wast"]
+  -- let files = ["if.wast"]
   scriptTestCases <- (`mapM` files) $ \file -> do
     content <- LBS.readFile $ "tests/samples/" ++ file
     let Right script = Parser.parseScript <$> Lexer.scanner content