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unix: use ensure, not (void)
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@ -106,7 +106,7 @@ int usb_hid_read(uint8_t iface_num, uint8_t *buf, uint32_t len) {
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static const char *ping_req = "PINGPING";
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static const char *ping_resp = "PONGPONG";
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if (r == strlen(ping_req) && memcmp(ping_req, buf, strlen(ping_req)) == 0) {
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(void)usb_hid_write(0, (const uint8_t *)ping_resp, strlen(ping_resp));
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ensure(usb_hid_write(0, (const uint8_t *)ping_resp, strlen(ping_resp)), NULL);
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return 0;
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}
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return r;
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