On the gcc 9.3 compiler, oemcrypto/test/oemcrypto_test.cpp will not
compile without curly braces in some places so we must add them to
these 4 tests.
Merged from http://go/wvgerrit/133865
Test: OEMCryptoLoadsCertificateAlternates tests and CheckUsageTableSizeAPI16
Bug: 200057124
Change-Id: Ia097ba992a024adfd3311b82b812de60985a0de1