fix a corruption in Vector<> when adding new items

would happen when vectors are copied and new items is
added in both vectors. we didn't duplicate the underlying
storage when adding items in vectors.

Bug: 6515797
Change-Id: If544c07d96c05821e088d7f2c9b5736f7e306c31
diff --git a/libs/utils/tests/Android.mk b/libs/utils/tests/Android.mk
index 98e4936..0a5b379 100644
--- a/libs/utils/tests/Android.mk
+++ b/libs/utils/tests/Android.mk
@@ -9,6 +9,7 @@
 	Looper_test.cpp \
 	String8_test.cpp \
 	Unicode_test.cpp \
+	Vector_test.cpp \
 	ZipFileRO_test.cpp
 
 shared_libraries := \