fix miaou-bash helper

etc/bash.bashrc

@@ -209,12 +209,15 @@ alias ssu='ss -tupn'
 
 # the miaou-bash helper function
 function miaou-bash {
-  if "$MIAOU_BASH_DIR"/bin/miaou-bash "$@"; then
+  "$MIAOU_BASH_DIR"/bin/miaou-bash "$@"
+  local code=$?
+  if [[ "$code" == 0 ]]; then
     if [[ "${1:-}" =~ --self-upgrade|--uninstall ]]; then
       echo 'reloading session now!'
       exec bash -l
     fi
   fi
+  return $code
 }
 
 # BASH COMPLETIONS