FFI: Add missing coercion when recording 64-bit bit.*(). #560

Job	Run time
test-tarantool-integration / tarantool / build	5m 45s
test-tarantool-integration / avro-schema / run_tests	10s
test-tarantool-integration / expirationd / run_tests	3m 1s
test-tarantool-integration / memcached / run_tests	1m 10s
test-tarantool-integration / vshard / run_tests	6m 56s
test-tarantool-integration / metrics / run_tests	1m 1s
test-tarantool-integration / smtp / run_tests	7s
test-tarantool-integration / checks / run_tests	45s
test-tarantool-integration / mysql / run_tests	35s
test-tarantool-integration / queue / run_tests	2m 51s
test-tarantool-integration / tarantool-c / run_tests	52s
test-tarantool-integration / tarantool-python / run_tests	2m 52s
test-tarantool-integration / crud / run_tests	12m 57s
test-tarantool-integration / ddl / run_tests	55s
test-tarantool-integration / go-tarantool / run_tests	2m 22s
test-tarantool-integration / php-client / run_tests	55s
test-tarantool-integration / php-queue / run_tests	1m 23s
test-tarantool-integration / etcd-client / run_tests (v3.4.30)	6m 2s
test-tarantool-integration / etcd-client / run_tests (v3.5.12)	6m 24s
	57m 3s

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