Fix uninitialized constant in util/comm-dev.c
Fix uninitialized constant in util/comm-dev.c

This made the /dev/cros_ec method fail when reporting the version.

BUG=chrome-os-partner:20571
BRANCH=none
TEST=manual

 ectool version

Used to fail; now it works again.

Change-Id: Ib5b7188f713981cffce36d065255d81b102d4bbe
Signed-off-by: Bill Richardson <129945214b1d548d8e49b6c29c43094f8c78057f@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/61133
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>
Commit-Queue: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

coreboot/chrome-ec,longsleep/ec,fourier49/BZ_DEV_EC,eatbyte/chromium-ec,eatbyte/chromium-ec,coreboot/chrome-ec,md5555/ec,alterapraxisptyltd/chromium-ec,thehobn/ec,gelraen/cros-ec,md5555/ec,eatbyte/chromium-ec,coreboot/chrome-ec,fourier49/BZ_DEV_EC,fourier49/BIZ_EC,alterapraxisptyltd/chromium-ec,eatbyte/chromium-ec,gelraen/cros-ec,akappy7/ChromeOS_EC_LED_Diagnostics,alterapraxisptyltd/chromium-ec,gelraen/cros-ec,mtk09422/chromiumos-platform-ec,akappy7/ChromeOS_EC_LED_Diagnostics,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BZ_DEV_EC,mtk09422/chromiumos-platform-ec,coreboot/chrome-ec,coreboot/chrome-ec,fourier49/BIZ_EC,longsleep/ec,thehobn/ec,md5555/ec,fourier49/BIZ_EC,akappy7/ChromeOS_EC_LED_Diagnostics,mtk09422/chromiumos-platform-ec,thehobn/ec,longsleep/ec,longsleep/ec,fourier49/BIZ_EC,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BZ_DEV_EC,thehobn/ec,coreboot/chrome-ec,mtk09422/chromiumos-platform-ec,gelraen/cros-ec,md5555/ec,alterapraxisptyltd/chromium-ec