[source] scripts/getver.sh: fix revision number on BSD/MacOS

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/?p=source.git;a=commitdiff;h=c19381dfca92a2eb80d35f294515a777da2cb7be

commit c19381dfca92a2eb80d35f294515a777da2cb7be
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Sat Jul 9 20:00:50 2016 +0200

    scripts/getver.sh: fix revision number on BSD/MacOS
    
    Strip leading whitespace from wc -l output
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 scripts/getver.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/getver.sh b/scripts/getver.sh
index fa2e676..5d8788f 100755
--- a/scripts/getver.sh
+++ b/scripts/getver.sh
@@ -24,8 +24,8 @@ try_git() {
 		;;
 	*)
 		UPSTREAM_BASE="$(git merge-base $GET_REV origin/master)"
-		UPSTREAM_REV="$(git rev-list reboot..$UPSTREAM_BASE | wc -l)"
-		REV="$(git rev-list reboot..$GET_REV | wc -l)"
+		UPSTREAM_REV="$(git rev-list reboot..$UPSTREAM_BASE | wc -l | awk '{print $1}')"
+		REV="$(git rev-list reboot..$GET_REV | wc -l | awk '{print $1}')"
 		if [ -n "$REV" -a -n "$UPSTREAM_REV" -a "$REV" -gt "$UPSTREAM_REV" ]; then
 			REV="r${UPSTREAM_REV}+$((REV - UPSTREAM_REV))"
 		else