dxvk: fix unbound variable warning in setup_dxvk.sh
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@ -42,7 +42,7 @@ usage() {
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exit 1
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exit 1
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}
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}
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case "$1" in
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case "${1:-}" in
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uninstall|install)
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uninstall|install)
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action=$1
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action=$1
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shift
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shift
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