[wasm] fix asm.js type for param type annotation statements

src/asmjs/asm-typer.cc

Index: src/asmjs/asm-typer.cc
diff --git a/src/asmjs/asm-typer.cc b/src/asmjs/asm-typer.cc
index 40683849dcd22bb129d4a91fab6cf571806f655a..2389551872a8b5e5f63e0da907b1a4aeff1e3f86 100644
--- a/src/asmjs/asm-typer.cc
+++ b/src/asmjs/asm-typer.cc
@@ -1163,6 +1163,7 @@ AsmType* AsmTyper::ValidateFunction(FunctionDeclaration* fun_decl) {
     parameter_types.push_back(type);
     SetTypeOf(proxy, type);
     SetTypeOf(expr, type);
+    SetTypeOf(expr->value(), type);
   }
 
   if (static_cast<int>(annotated_parameters) != fun->parameter_count()) {