Fix memory leak on connection error while pipelining commands.
Fix memory leak on connection error while pipelining commands.

Danack/phpiredis,Danack/phpiredis,RustJason/phpiredis,jymsy/phpiredis,nrk/phpiredis,jymsy/phpiredis,RustJason/phpiredis,nrk/phpiredis,nrk/phpiredis,Danack/phpiredis,RustJason/phpiredis