Fix double free possibility in wolfSSL_X509_set_ext #8762

Job	Run time
Build wolfSSL (hostap-vm-build2, --enable-wpas-dpp --enable-brainpool --with-eccminsz=192 --enabl...	2m 9s
Checkout hostap repo	18s
Build wolfSSL (hostap-vm-build1, --disable-tls13)	1m 55s
Build UML (UserMode Linux)	3m 25s
hwsim test (true, true, 07c9f183ea744ac04585fb6dd10220c75a5e2e74, e1876fbbf298ee442bc7ab8561331eb...	8m 24s
hwsim test (true, false, 07c9f183ea744ac04585fb6dd10220c75a5e2e74, e1876fbbf298ee442bc7ab8561331e...	10m 25s
hwsim test (true, false, hostap_2_10, true, hostap-vm-build1)	2m 39s
hwsim test (true, true, hostap_2_10, true, hostap-vm-build1)	3m 2s
hwsim test (false, true, hostap_2_10, true, hostap-vm-build1)	3m 44s
hwsim test (false, true, b607d2723e927a3446d89aed813f1aa6068186bb, ad5b52a49b3cc2a5bfb47ccc1d6a51...	4m 44s
hwsim test (false, true, 07c9f183ea744ac04585fb6dd10220c75a5e2e74, e1876fbbf298ee442bc7ab8561331e...	8m 29s
	49m 14s

Provide feedback