Ticket #4627: fix segfault in the help engine #153

Job	Run time
call-build-macos / build-macos	1m 33s
call-build-fedora / build-fedora	1m 53s
call-build-alpine / build-alpine	2m 5s
call-build-freebsd / build-freebsd	3m 1s
call-build-solaris / build-solaris	5m 57s
call-build-ubuntu / build-ubuntu	4m 14s
	18m 43s

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