fix a bug from recent refactoring RE some NERDTreeCWD

autoload/nerdtree.vim

@@ -127,12 +127,6 @@ endfunction
 
 " SECTION: View Functions {{{1
 "============================================================
-"
-" FUNCTION: nerdtree#chRoot(node) {{{2
-" changes the current root to the selected one
-function! nerdtree#chRoot(node)
-    call s:chRoot(a:node)
-endfunction
 
 "FUNCTION: nerdtree#closeTree() {{{2
 "Closes the primary NERD tree window for this tab

autoload/nerdtree/ui_glue.vim

@@ -157,7 +157,7 @@ function! nerdtree#ui_glue#chRootCwd()
     if cwd.str() == g:NERDTreeFileNode.GetRootForTab().path.str()
        return
     endif
-    call nerdtree#chRoot(g:NERDTreeDirNode.New(cwd))
+    call s:chRoot(g:NERDTreeDirNode.New(cwd))
 endfunction
 
 " FUNCTION: nnerdtree#ui_glue#clearBookmarks(bookmarks) {{{1
@@ -281,7 +281,7 @@ function! s:findAndRevealPath()
                 call nerdtree#putCursorInTreeWin()
             endif
             let b:NERDTreeShowHidden = g:NERDTreeShowHidden
-            call nerdtree#chRoot(g:NERDTreeDirNode.New(p.getParent()))
+            call s:chRoot(g:NERDTreeDirNode.New(p.getParent()))
         else
             if !nerdtree#isTreeOpen()
                 call g:NERDTreeCreator.TogglePrimary("")

plugin/NERD_tree.vim

@@ -194,7 +194,7 @@ endfunction
 
 function! NERDTreeCWD()
     call NERDTreeFocus()
-    call nerdtree#chRootCwd()
+    call nerdtree#ui_glue#chRootCwd()
 endfunction
 " SECTION: Post Source Actions {{{1
 call nerdtree#postSourceActions()