Fix static analysis failures

src/freedombone-app-bdsmail

             sed -i "s|set smtp_url=.*|set smtp_url=smtp://${curr_username}:${new_user_password}@127.0.0.1:$I2P_SMTP_PORT/" "/home/${USERNAME}/.mutt/bdsmail"
             sed -i "s|set from=.*|set from=${USERNAME}@$(bdsmail_domain)|g" "/home/${USERNAME}/.mutt/bdsmail"
             chown "${USERNAME}":"${USERNAME}" "/home/${USERNAME}/.mutt/bdsmail"
-            cd $BDSMAIL_DIR
+            cd $BDSMAIL_DIR || exit 2468246
             $BDSMAIL_DIR/bin/mailtool $BDSMAIL_DIR/config.ini "$curr_username" "/home/$curr_username/Maildir/i2p" "$new_user_password"
         fi
     done
     if [ -d /repos/bdsmail ]; then
         mkdir $BDSMAIL_DIR
         cp -r -p /repos/bdsmail/. $BDSMAIL_DIR
-        cd $BDSMAIL_DIR
+        cd $BDSMAIL_DIR || exit 24687246
         git pull
     else
         git_clone "$BDSMAIL_REPO" "$BDSMAIL_DIR"
         exit 5735735
     fi
 
-    cd $BDSMAIL_DIR
+    cd $BDSMAIL_DIR || exit 2468246
     git checkout "$BDSMAIL_COMMIT" -b "$BDSMAIL_COMMIT"
     set_completion_param "bdsmail commit" "$BDSMAIL_COMMIT"