Use correct rootdir when installing nodejs

src/freedombone-utils-nodejs

@@ -150,7 +150,7 @@ if [[ "\$npm_version" != "${NPM_VERSION}" ]]; then
 fi
 EOF
     chmod +x $rootdir/usr/bin/test_nodejs_install
-    chroot "$rootdir" /usr/bin/test_nodejs_install
+    $mesh_install_nodejs_prefix /usr/bin/test_nodejs_install
     if [ ! "$?" = "0" ]; then
         echo $"nodejs version numbers did not match. Architecture is $NPM_ARCH."
         exit 76835282