FAPI: Fix authorization session handling. 3.2.x #1799

Job	Run time
test-mbedtls	2m 47s
scanbuild	11m 1s
build-test (ubuntu-18.04, gcc)	4m 11s
build-test (ubuntu-18.04, clang)	4m 21s
coverity-test	0s
build-test (ubuntu-20.04, gcc)	4m 20s
test-coverage	4m 21s
build-test (ubuntu-20.04, clang)	4m 3s
build-test (fedora-32, gcc)	4m 36s
test-fuzz	2m 18s
test-tcti-config	10m 31s
build-test (fedora-32, clang)	4m 35s
build-test (opensuse-leap, gcc)	4m 30s
build-test (opensuse-leap, clang)	4m 16s
	1h 5m 50s

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