rlm_totp: Backport changes from v3.2.x #7513

Job	Run time
pre-ci	5s
master-self-ubuntu20-linux-gcc-lean	7m 23s
master-self-ubuntu20-linux-gcc	7m 5s
master-self-ubuntu20-linux-gcc-O2-g3	6m 55s
master-self-ubuntu20-linux-gcc-ndebug	7m 15s
master-self-ubuntu20-linux-clang-lean	9m 5s
master-self-ubuntu20-linux-clang	9m 30s
master-self-ubuntu20-linux-clang-O2-g3	8m 38s
master-self-ubuntu20-linux-clang-ndebug	9m 8s
master-self-ubuntu20-linux-clang-altlibs	9m 33s
master-self-ubuntu20-linux-fuzzer	11m 6s
Merge preflight	0s
Merge into upstream	0s
	1h 25m 43s

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