Add some missing dlclose(.)

Bug: 17358010
Change-Id: I9e427b7681f1a8fe890b0b47812d9e65ab95c792
diff --git a/tests/dlfcn_test.cpp b/tests/dlfcn_test.cpp
index 6de38c8..6bdde44 100644
--- a/tests/dlfcn_test.cpp
+++ b/tests/dlfcn_test.cpp
@@ -338,4 +338,6 @@
   ASSERT_TRUE(handle1 != NULL);
   ASSERT_TRUE(handle2 != NULL);
   ASSERT_EQ(handle1, handle2);
+  dlclose(handle1);
+  dlclose(handle2);
 }