games/openra: unbreak fetch due to repo shrink

fetch: https://github.com/openra/OpenRA/commit/e13fd693c386.patch: size mismatch: expected 71620, actual 71562

This reverts commit d5ecb8f8afa15f24100df6a3dd9c3e7af491de74.

(cherry picked from commit 8e8ef5a07cec54ea055c53a3f352340fe517d8cf)