Correct auplugin_fgets tests #342

Job	Run time
build-and-test (fedora:latest, gcc)	2m 14s
build-and-test (ubuntu:latest, clang)	1m 42s
build-and-test (ubuntu:latest, gcc)	1m 28s
build-and-test (fedora:latest, clang)	1m 32s
	6m 56s

Provide feedback