Fix proguard rules for Struct in NetworkStack am: be3c865262 am: 58628870c4

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/1674687

Change-Id: I38c276c645c3f58c03a757580135a4873e863af3
(cherry picked from commit a8a7da3695907da2562e059f569c952809900591)
1 file changed