Add a space in multiple root test for ensuring that whitespace is not consumed when done.

test/unittest/readertest.cpp

@@ -566,7 +566,8 @@ void TestMultipleRoot() {
 	EXPECT_EQ(2u, h.step_);
 	EXPECT_TRUE(reader.Parse<parseFlags>(s, h));
 	EXPECT_EQ(4u, h.step_);
-	EXPECT_EQ('a', s.Peek());
+	EXPECT_EQ(' ', s.Take());
+	EXPECT_EQ('a', s.Take());
 }
 
 TEST(Reader, Parse_MultipleRoot) {