Fix #14929 Crash in CheckBufferOverrunImpl::getBufferSize() (#8743) #1192

Job	Run time
build (ubsan, -DANALYZE_UNDEFINED=On, true, process, true)	59m 35s
build (asan, -DANALYZE_ADDRESS=On, true, process, false)	20m 23s
build (tsan, -DANALYZE_THREAD=On, false, thread, false, --executor=thread --error-exitcode=0)	17m 59s
	1h 37m 57s

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