Do not crash if secontext is nullptr

LOG(DEBUG) tries to print a string pointed by secontext.get() but
crashed if it was nullptr.

Bug: 111888637
Test: "make -j50" and ran emulator
Change-Id: Iac78f650e7f48781030dc610f7d35cd52c250802
Signed-off-by: Roman Kiryanov <rkir@google.com>
1 file changed