improve SSL leak fix redis/hiredis#896
improve SSL leak fix redis/hiredis#896

Free SSL object when redisSSLConnect fails but avoid doing that for
callers of redisInitiateSSL who are supposed to manager their own SSL
object.

Signed-off-by: Hans Zandbelt <ed0aee6a22215d4e183b63ab4a45da7fb897917a@zmartzone.eu>
redis/hiredis,redis/hiredis,redis/hiredis