tls_wolfssl: add note about the current state of affairs

src/modules/tls_wolfssl/doc/tls_wolfssl.xml

@@ -77,6 +77,11 @@ loadmodule "tls_wolfssl.so"
 		        The wolfSSL TLS module is intended to be compiled with a
 		        recent version of wolfSSL (5.2.0+).
 		</para>
+		<para>
+			Default compilations of the library will not work with Kamailio's
+			own memory allocation. See https://github.com/wolfSSL/wolfssl/issues/5264
+			for more details.
+		</para>
 	</section>