allow ssl module to compile if openssl doesn't support SSL 3 (closes #22935)

Patch by Kurt Roeckx.
diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 90bca98..17beaf8 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -2016,8 +2016,10 @@
     else if (proto_version == PY_SSL_VERSION_TLS1_2)
         ctx = SSL_CTX_new(TLSv1_2_method());
 #endif
+#ifndef OPENSSL_NO_SSL3
     else if (proto_version == PY_SSL_VERSION_SSL3)
         ctx = SSL_CTX_new(SSLv3_method());
+#endif
 #ifndef OPENSSL_NO_SSL2
     else if (proto_version == PY_SSL_VERSION_SSL2)
         ctx = SSL_CTX_new(SSLv2_method());
@@ -4065,8 +4067,10 @@
     PyModule_AddIntConstant(m, "PROTOCOL_SSLv2",
                             PY_SSL_VERSION_SSL2);
 #endif
+#ifndef OPENSSL_NO_SSL3
     PyModule_AddIntConstant(m, "PROTOCOL_SSLv3",
                             PY_SSL_VERSION_SSL3);
+#endif
     PyModule_AddIntConstant(m, "PROTOCOL_SSLv23",
                             PY_SSL_VERSION_SSL23);
     PyModule_AddIntConstant(m, "PROTOCOL_TLSv1",