std: use #ifdef rather than #if where the constant may not be defined
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std.c
4
std.c
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@ -264,11 +264,11 @@ SR_PRIV int std_dev_clear(const struct sr_dev_driver *driver,
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driver->dev_close(sdi);
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if (sdi->conn) {
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#if HAVE_LIBSERIALPORT
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#ifdef HAVE_LIBSERIALPORT
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if (sdi->inst_type == SR_INST_SERIAL)
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sr_serial_dev_inst_free(sdi->conn);
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#endif
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#if HAVE_LIBUSB_1_0
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#ifdef HAVE_LIBUSB_1_0
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if (sdi->inst_type == SR_INST_USB)
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sr_usb_dev_inst_free(sdi->conn);
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#endif
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