wolfSSL_X509_REQ_add1_attr_by_NID: clean up push call for analyzers #987

Job	Run time
Build UML (UserMode Linux)	2s
Build wolfSSL (hostap-vm-build1, --disable-tls13)	1m 40s
Build wolfSSL (hostap-vm-build2, --enable-wpas-dpp --enable-brainpool --with-eccminsz=192 --enab...	2m 14s
hwsim test (true, true, hostap_2_10, true, hostap-vm-build1)	3m 28s
hwsim test (true, true, 07c9f183ea744ac04585fb6dd10220c75a5e2e74, e1876fbbf298ee442bc7ab8561331eb...	12m 32s
hwsim test (true, false, hostap_2_10, true, hostap-vm-build1)	3m 13s
hwsim test (true, false, 07c9f183ea744ac04585fb6dd10220c75a5e2e74, e1876fbbf298ee442bc7ab8561331e...	12m 55s
hwsim test (false, true, hostap_2_10, true, hostap-vm-build1)	3m 4s
hwsim test (false, true, b607d2723e927a3446d89aed813f1aa6068186bb, ad5b52a49b3cc2a5bfb47ccc1d6a51...	6m 1s
hwsim test (false, true, 07c9f183ea744ac04585fb6dd10220c75a5e2e74, e1876fbbf298ee442bc7ab8561331e...	12m 3s
	57m 12s

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