Fix application_sdk_versions_smoke test

Bug: http://b/21364029
Change-Id: I9716d6b0ea7fae6483629a290dbe695b68526588

tests/libdl_test.cpp

@@ -16,12 +16,14 @@
 
 #include <gtest/gtest.h>
 
+#include <android/api-level.h>
+
 extern "C" uint32_t android_get_application_target_sdk_version();
 extern "C" void android_set_application_target_sdk_version(uint32_t target);
 
 TEST(libdl, application_sdk_versions_smoke) {
   // Check initial values
-  ASSERT_EQ(0U, android_get_application_target_sdk_version());
+  ASSERT_EQ(static_cast<uint32_t>(__ANDROID_API__), android_get_application_target_sdk_version());
 
   android_set_application_target_sdk_version(20U);
   ASSERT_EQ(20U, android_get_application_target_sdk_version());