delete [bufexplorer] appeared in jumplist

plugin/bufexplorer.vim

@@ -919,7 +919,7 @@ function! s:SelectBuffer(...)
             endif
 
             " Switch to the selected buffer.
-            execute "keepalt silent b!" _bufNbr
+            execute "keepjumps keepalt silent b!" _bufNbr
         endif
 
         " Make the buffer 'listed' again.