Check for fd failure properly
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@ -242,7 +242,7 @@ static size_t explicit_find_gpus(struct wlr_session *session,
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}
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ret[i] = open_if_kms(session, ptr);
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if (ret[i] <= 0) {
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if (ret[i] < 0) {
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wlr_log(L_ERROR, "Unable to open %s as DRM device", ptr);
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} else {
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++i;
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