build: handle broken awk in version.bash

R=adg, rsc, ality
CC=golang-dev
https://golang.org/cl/4281069

diff --git a/src/version.bash b/src/version.bash
index b3df0e91a80c7e333ef261e9bb28ed8e36c56063..7b2c06801a09efad4bb00c2e91d0c695c435781b 100755 (executable)
--- a/src/version.bash
+++ b/src/version.bash
@@ -19,7 +19,7 @@ fi
 # Find most recent known release tag.
 TAG=$(hg tags |
        sort -rn -k2 |
-       awk -vver=$VERSION '$2 <= ver && $1~/^(release|weekly)\./ {print $1}' |
+       awk -v ver=$VERSION '$2 <= ver && $1~/^(release|weekly)\./ {print $1}' |
        sed -n 1p)
 
 if [ "$TAG" != "" ]; then