[openwrt/openwrt] scripts/getver.sh: silence rev-list errors

[LEDE Commits]

ynezz pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/f52aee0455f6ce77b16a78ddf17f1ef49ddc2380

commit f52aee0455f6ce77b16a78ddf17f1ef49ddc2380
Author: Petr Štetiar <ynezz at true.cz>
AuthorDate: Tue Mar 3 12:47:07 2020 +0100

    scripts/getver.sh: silence rev-list errors
    
    Shallow copies are quite common on CI platforms nowadays, making REBOOT
    tag unavailable, thus producing following confusing errors in the build
    logs:
    
     fatal: Invalid revision range ee53a240ac902dc83209008a2671e7fdcf55957a..HEAD
     fatal: Invalid revision range ee53a240ac902dc83209008a2671e7fdcf55957a..0493d57e04774d47921a7d2014b567455d5dc16b
    
    Signed-off-by: Petr Štetiar <ynezz at true.cz>
---
 scripts/getver.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/scripts/getver.sh b/scripts/getver.sh
index 9175f411db..49260a2260 100755
--- a/scripts/getver.sh
+++ b/scripts/getver.sh
@@ -20,18 +20,18 @@ try_git() {
 	case "$GET_REV" in
 	r*)
 		GET_REV="$(echo $GET_REV | tr -d 'r')"
-		BASE_REV="$(git rev-list ${REBOOT}..HEAD | wc -l | awk '{print $1}')"
+		BASE_REV="$(git rev-list ${REBOOT}..HEAD 2>/dev/null | wc -l | awk '{print $1}')"
 		REV="$(git rev-parse HEAD~$((BASE_REV - GET_REV)))"
 		;;
 	*)
 		BRANCH="$(git rev-parse --abbrev-ref HEAD)"
 		ORIGIN="$(git rev-parse --verify --symbolic-full-name ${BRANCH}@{u} 2>/dev/null)"
 		[ -n "$ORIGIN" ] || ORIGIN="$(git rev-parse --verify --symbolic-full-name master@{u} 2>/dev/null)"
-		REV="$(git rev-list ${REBOOT}..$GET_REV | wc -l | awk '{print $1}')"
+		REV="$(git rev-list ${REBOOT}..$GET_REV 2>/dev/null | wc -l | awk '{print $1}')"
 
 		if [ -n "$ORIGIN" ]; then
 			UPSTREAM_BASE="$(git merge-base $GET_REV $ORIGIN)"
-			UPSTREAM_REV="$(git rev-list ${REBOOT}..$UPSTREAM_BASE | wc -l | awk '{print $1}')"
+			UPSTREAM_REV="$(git rev-list ${REBOOT}..$UPSTREAM_BASE 2>/dev/null | wc -l | awk '{print $1}')"
 		else
 			UPSTREAM_REV=0
 		fi