use cd instead of pushd

support/package_nodejs

@@ -30,14 +30,14 @@ basedir="$( cd -P "$( dirname "$0" )" && pwd )"
 tempdir="$( mktemp -t node_XXXX )"
 rm -rf $tempdir
 mkdir -p $tempdir
-pushd $tempdir
+cd $tempdir
 
 # download and extract node
 curl http://nodejs.org/dist/v${node_version}/node-v${node_version}.tar.gz -o node.tgz
 tar xzvf node.tgz
 
 # go into node dir
-pushd node-v${node_version}
+cd node-v${node_version}
 
 # build and package nodejs for heroku
 vulcan build -v -o $tempdir/node-${node_version}.tgz
@@ -47,7 +47,7 @@ $basedir/aws/s3 put $S3_BUCKET \
   nodejs-${node_version}.tgz $tempdir/node-${node_version}.tgz
 
 # go into scons
-pushd tools/scons
+cd tools/scons
 
 # package scons
 scons_version=$(ls | grep "scons-local" | cut -d- -f3)