fix(core): Pacify some clang-analyzer warnings #1068

Job	Run time
Debug Build & Unit Tests (gcc)	3m 7s
Debug Build & Unit Tests (gcc, 32bit)	2m 58s
Debug Build & Unit Tests without Subscriptions (gcc)	1m 22s
Debug Build & Unit Tests with Diagnostics (gcc)	3m 39s
Debug Build & Unit Tests with multithreading (gcc)	2m 31s
Debug Build & Unit Tests with Alarms&Conditions (gcc)	11m 14s
Debug Build & Unit Tests (clang)	3m 54s
Debug Build & Unit Tests (tcc)	2m 14s
Encryption (MbedTLS) Build & Unit Tests (gcc)	2m 35s
PubSub Encryption (MbedTLS) Build & Unit Tests (gcc)	2m 54s
PubSub SKS Build & Unit Tests (gcc)	4m 28s
Encryption (OpenSSL) Build & Unit Tests (gcc)	2m 27s
Encryption (LibreSSL) Build & Unit Tests (gcc)	6m 18s
TPM Tool Build	2m 6s
Release Build	1m 44s
Amalgamation Build	46s
Amalgamation Build with Multithreading	1m 17s
Valgrind Build & Unit Tests with MbedTLS (gcc)	14m 48s
Valgrind Build & Unit Tests with OpenSSL (gcc)	20m 1s
Valgrind Examples with MbedTLS (gcc)	58m 39s
Valgrind Examples with OpenSSL (gcc)	1h 7m 28s
Clang Static Analyzer	3m 10s
Build All Companion Specifications	9m 5s
	3h 48m 45s

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