Consistency fix in BUF_MEM_grow: Initialise to zero when new memory had to be allocated, not just when reusing the existing buffer.
Consistency fix in BUF_MEM_grow: Initialise to zero when new memory
had to be allocated, not just when reusing the existing buffer.

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl