Fixed a bug where the common header fields (channel, level, message and time) where removed due to wrong array intersection.
Fixed a bug where the common header fields (channel, level, message and time) where removed due to wrong array intersection.

Further improved PDO compatibility, as a MySQL only statement was removed.

Closes waza-ari/monolog-mysql#2

waza-ari/monolog-mysql,stowarzyszenie-wiosna/monolog-pg,FoxxMD/monolog-mysql