Reapply -Wold-style-cast

 Added pragmas to disable checks for the method
 using libz.h macros.

Change-Id: I25aa1adf09f3ecff61d8fea6306b24b37990ab46
diff --git a/libziparchive/Android.mk b/libziparchive/Android.mk
index 027ad16..3937449 100644
--- a/libziparchive/Android.mk
+++ b/libziparchive/Android.mk
@@ -25,6 +25,7 @@
 LOCAL_SHARED_LIBRARIES := libutils
 LOCAL_MODULE:= libziparchive
 LOCAL_CFLAGS := -Werror -Wall
+LOCAL_CPPFLAGS := -Wold-style-cast
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)