init file sources functions too early?

[rucketeg]

When building custom firmware using the imagebuilder following errors are reported (not fatal):

Finalizing root filesystem...
add alternative: /sbin/logread -> /usr/libexec/logread-ubox
(...)
add alternative: /usr/bin/wget -> /bin/uclient-fetch
/builder/build_dir/target-mipsel_24kc_musl/root-ramips/etc/init.d/usteer: line 10: /lib/functions/network.sh: No such file or directory
/builder/build_dir/target-mipsel_24kc_musl/root-ramips/etc/init.d/usteer: line 11: /usr/share/libubox/jshn.sh: No such file or directory
/builder/build_dir/target-mipsel_24kc_musl/root-ramips/etc/init.d/usteer: line 12: /lib/functions.sh: No such file or directory
Enabling boot
(...)
Enabling urngd
./etc/init.d/usteer: line 10: /lib/functions/network.sh: No such file or directory
./etc/init.d/usteer: line 11: /usr/share/libubox/jshn.sh: No such file or directory
./etc/init.d/usteer: line 12: /lib/functions.sh: No such file or directory
Enabling usteer
Enabling wpad

Seems that the ustreer initscript is executed from inside of the imagebuilder environment to enable this service by default in the image. However because certain files are sourced outside of any function the error is produced.

usteer/openwrt/usteer/files/etc/init.d/usteer

Lines 10 to 12 in 1d6524c

	. /lib/functions/network.sh
	. /usr/share/libubox/jshn.sh
	. /lib/functions.sh

Is it possible and does it make sense to move those lines inside the functions that need them?