eliminate getIfaceNameFromMap()

this helper doesn't really help...

all it does is a bpf map lookup and call a function on failure.

Test: TreeHugger, atest libnetworkstats_test
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I7846eee3a37bcc8be82497cdf22ade5b214795da
3 files changed