Hi,

I am using CRYPTO_set_mem_functions to use our own custom memory
routines in a non blocking proxy implementation. This was working fine
in 0.9.8 and 1.0.0 but with 1.0.1c I can see that the custom free
routine is being invoked with a NULL argument after calling SSL_free
and this results in the proxy crashing.

#3  0x0828bd24 in CUSTOM_FREE (oldMem=0x0) at custom_mem.c:340
#4  0xb75342b4 in CRYPTO_free () from
/home/product/code/firmware/current/lib/openssl1.0/lib/libcrypto.so.1.0.0
#5  0x00000000 in ?? ()

This happens every time the SSL connections is torn down. If I don't
use CRYPTO_set_mem_functions it works fine. I am assuming the default
free routine ignores a NULL argument. Is it an expectation from the
custom free routine to also ignore NULL? I can provide more
information if needed. Can someone help me debug this problem.

Thanks,
Sudarshan
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