OSV-2017-108 Heap-use-after-free in nl::wpantund::SpinelNCPInstance::should_filter_address

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4459 Crash type: Heap-use-after-free READ 6 Crash state: nl::wpantund::SpinelNCPInstance::shouldfilteraddress nl::wpantund::SpinelNCPInstance::handlencpspinelvalueinserted nl::wpantund::SpinelNCPInstance::handlencpspinelcallba...