PG16 build failure error: too few arguments to function ‘stringToQualifiedNameList’

[robe]

21:42:28 ---- Making all in libpgcommon
21:42:28 make[1]: Entering directory '/var/lib/jenkins/workspace/postgis/branches/3.4/libpgcommon'
21:42:28 gcc -I./../liblwgeom -I../liblwgeom  -I/var/lib/jenkins/workspace/geos/rel-3.12w64/include   -I/usr/include/libxml2 -I/usr/include -I/usr/include/json-c  -DNDEBUG  -std=gnu99 -g -O2 -fno-math-errno -fno-signed-zeros -Wall -I/var/lib/jenkins/workspace/pg/rel/pg16w64/include/postgresql/server   -fPIC -DPIC  -c -o gserialized_gist.o gserialized_gist.c
21:42:29 gcc -I./../liblwgeom -I../liblwgeom  -I/var/lib/jenkins/workspace/geos/rel-3.12w64/include   -I/usr/include/libxml2 -I/usr/include -I/usr/include/json-c  -DNDEBUG  -std=gnu99 -g -O2 -fno-math-errno -fno-signed-zeros -Wall -I/var/lib/jenkins/workspace/pg/rel/pg16w64/include/postgresql/server   -fPIC -DPIC  -c -o lwgeom_transform.o lwgeom_transform.c
21:42:29 gcc -I./../liblwgeom -I../liblwgeom  -I/var/lib/jenkins/workspace/geos/rel-3.12w64/include   -I/usr/include/libxml2 -I/usr/include -I/usr/include/json-c  -DNDEBUG  -std=gnu99 -g -O2 -fno-math-errno -fno-signed-zeros -Wall -I/var/lib/jenkins/workspace/pg/rel/pg16w64/include/postgresql/server   -fPIC -DPIC  -c -o lwgeom_cache.o lwgeom_cache.c
21:42:29 gcc -I./../liblwgeom -I../liblwgeom  -I/var/lib/jenkins/workspace/geos/rel-3.12w64/include   -I/usr/include/libxml2 -I/usr/include -I/usr/include/json-c  -DNDEBUG  -std=gnu99 -g -O2 -fno-math-errno -fno-signed-zeros -Wall -I/var/lib/jenkins/workspace/pg/rel/pg16w64/include/postgresql/server   -fPIC -DPIC  -c -o lwgeom_pg.o lwgeom_pg.c
21:42:30 lwgeom_pg.c: In function ‘postgis_get_full_version_schema’:
21:42:30 lwgeom_pg.c:104:16: error: too few arguments to function ‘stringToQualifiedNameList’
21:42:30   104 |  List* names = stringToQualifiedNameList(proname);
21:42:30       |                ^~~~~~~~~~~~~~~~~~~~~~~~~
21:42:30 In file included from lwgeom_pg.c:38:
21:42:30 /var/lib/jenkins/workspace/pg/rel/pg16w64/include/postgresql/server/utils/regproc.h:28:14: note: declared here
21:42:30    28 | extern List *stringToQualifiedNameList(const char *string, Node *escontext);
21:42:30       |              ^~~~~~~~~~~~~~~~~~~~~~~~~
21:42:30 make[1]: *** [Makefile:69: lwgeom_pg.o] Error 1
21:42:30 make[1]: Leaving directory '/var/lib/jenkins/workspace/postgis/branches/3.4/libpgcommon'
21:42:30 make: *** [GNUmakefile:25: all] Error 1
21:42:30 Build step 'Execute shell' marked build as failure
21:42:30 Triggering a new build of PostgreSQL stop
21:42:30 Finished: FAILURE

this failure started showing on debbie in last two runs on Dec 30th. Last successful run against PG16 was 12/27.