Committed in r1881958. BTW, how I tested this is by cleaning my build:
(cd obj-dir && make local-clean) and then rebuilding, adding the following options to configure:--with-apr=$HOME/.local/apr-1.4.8 --with-apr-util=$HOME/.local/apr-util-1.5.2
with local builds of apr and apr-util in the stated places. - Julian