scripts/getver.sh: fix one more wc -l call

The revision to hash conversion was missed when fixing up the script.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

scripts/getver.sh

@@ -19,7 +19,7 @@ try_git() {
 	case "$GET_REV" in
 	r*)
 		GET_REV="$(echo $GET_REV | tr -d 'r')"
-		BASE_REV="$(git rev-list reboot..HEAD | wc -l)"
+		BASE_REV="$(git rev-list reboot..HEAD | wc -l | awk '{print $1}')"
 		REV="$(git rev-parse HEAD~$((BASE_REV - GET_REV)))"
 		;;
 	*)