perform_upgrade fix

lib/self-upgrade.bash

@@ -81,8 +81,8 @@ function perform_upgrade {
   if source /tmp/miaou-bash-install.sh upgrade; then
     if [[ $(find "$backup"/hooks.d -maxdepth 1 -type f -not -name '.*' | wc -l) -gt 0 ]]; then
       sudo mv "$backup"/hooks.d/* "$MIAOU_BASH_DIR"/hooks.d/
-      sudo miaou-bash "$MIAOU_BASH_DIR"/lib/initiate.bash
     fi
+    sudo -E "$MIAOU_BASH_DIR"/bin/miaou-bash "$MIAOU_BASH_DIR"/lib/initiate.bash
     sudo rm -rf "$backup"
   else
     echo "ERROR: trouble during self-upgrade: revert back"