Update testplatform.cpp

Author: chrchr-github

test/testplatform.cpp

@@ -208,7 +208,7 @@ class TestPlatform : public TestFixture {
 
     void valid_config_native() const {
         Platform platform;
-        PLATFORM(platform, cppcheck::Platform::Type::Native);
+        PLATFORM(platform, Platform::Type::Native);
 #ifdef _WIN32
         ASSERT(platform.isWindows());
 #else