[PATCH] Fix buffer overrun in EUC-KR conversion module (bz #24973)

[PATCH] Fix buffer overrun in EUC-KR conversion module (bz #24973)

The byte 0xfe as input to the EUC-KR conversion denotes a user-defined
area and is not allowed.  The from_euc_kr function used to skip two bytes
when told to skip over the unknown designation, potentially running over
the buffer end.

Gbp-Pq: Topic all
Gbp-Pq: Name git-CVE-2019-25013-Fix-buffer-overrun-in-EUC-KR-conversion-module-bz-24.diff