Further h2 compile fixes: #534

Job	Run time
Empty APLOGNO() test	32s
Default	2m 16s
All-static modules	1m 40s
Prefork MPM, all-modules (except cgid)	2m 48s
Worker MPM, all-modules	2m 15s
Shared MPMs, all-modules	2m 21s
Event MPM, all-modules, mod_cgid only	2m 42s
Event MPM, all-modules, no CMSG_DATA	2m 52s
Default, all-modules + install	2m 10s
Default, all-modules, random test order	2m 11s
GCC 10 maintainer-mode w/-Werror, install + VPATH	2m 59s
All-modules, APR 1.7.4, APR-util 1.6.3	5m 47s
APR 1.8.x, APR-util 1.7.x	4m 8s
Pool-debug	4m 51s
Shared MPMs (event), pool-debug, SSL/TLS variants	5m 8s
Shared MPMs (worker), pool-debug, SSL/TLS variants	6m 41s
Shared MPMs (prefork), pool-debug, SSL/TLS variants	7m 41s
litmus WebDAV tests	1m 50s
Regenerate ap_expr	2m 21s
APR 1.7.4, APR-util 1.6.3, LDAP	4m 55s
APR trunk thread debugging	2m 47s
UBSan	7m 1s
ASan	4m 55s
ASan, pool-debug	4m 51s
HTTP/2 test suite	3m 14s
MOD_TLS test suite	5m 31s
	1h 36m 27s

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