Bundle: Initialize submodules after checkout to branch

Ensures we've got benchmark submodule initialized.

bundle/bundle-linux.sh

@@ -215,7 +215,6 @@ fi
 ################################################################################
 # Check out benchmark repository.
 
-
 if [ -d "${SVN_BENCHMARK_CHECKOUT_DIRECTORY}" ]; then
   echo "Updating benchmark scenes..."
   "${SVN}" up "${SVN_BENCHMARK_CHECKOUT_DIRECTORY}"
@@ -249,8 +248,11 @@ if [ ! -d "${SOURCE_DIRECTORY}" ]; then
   ${GIT_C} submodule update --init --recursive
 fi
 
-echo "Checking to a latest benchmark branch..."
+echo "Switching to benchmark branch..."
 ${GIT_C} checkout ${GIT_BENCHMARK_BRANCH}
+echo "Initializing branch submodules..."
+${GIT_C} submodule update --init --recursive
+echo "Checking to a latest branch..."
 ${GIT_C} pull
 echo "Updatying submodules to the latest version..."
 ${GIT_C} submodule update --remote