This helps when moving from MariaDB 5.5 to MariaDB 10.0 as sometimes the log file size is rounded differently.

storage/innobase/srv/srv0start.c:
  Give a warning, not an error, if the log file size in innodb doesn't match what is on disk
storage/xtradb/srv/srv0start.c:
  Give a warning, not an error, if the log file size in innodb doesn't match what is on disk