XfrmController - fix bugprone-sizeof-expression warning

Fixes:
  system/netd/server/XfrmController.cpp:1280:12: warning: suspicious usage of 'sizeof(A*)'; pointer to aggregate [bugprone-sizeof-expression]

Test: builds
Bug: 153035880
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: If3d37a22412b1a08e0356b7a36c038a37c946ed7
Merged-In: If3d37a22412b1a08e0356b7a36c038a37c946ed7
2 files changed