wrc: Remove duplicate code (PVS-Studio)

[André Hentschel]

I preserved the copies which include the extra comment
https://bugs.winehq.org/show_bug.cgi?id=37120

---
 tools/wrc/genres.c | 178 ++++++++++++++++++-----------------------------------
 1 file changed, 61 insertions(+), 117 deletions(-)


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