Fixed resolve() double endslash defect

plugin/NERD_tree.vim

@@ -2297,7 +2297,7 @@ function! s:Path.readInfoFromDisk(fullpath)
     let lastPathComponent = self.getLastPathComponent(0)
 
     "get the path to the new node with the parent dir fully resolved
-    let hardPath = resolve(self.strTrunk()) . '/' . lastPathComponent
+    let hardPath = resolve(self.strTrunk()) . lastPathComponent
 
     "if  the last part of the path is a symlink then flag it as such
     let self.isSymLink = (resolve(hardPath) != hardPath)
@@ -2472,9 +2472,13 @@ function! s:Path._str()
 endfunction
 
 "FUNCTION: Path.strTrunk() {{{3
-"Gets the path without the last segment on the end.
+"Gets the path without the last segment on the end, always with an endslash
 function! s:Path.strTrunk()
-    return self.drive . '/' . join(self.pathSegments[0:-2], '/')
+    let toReturn = self.drive . '/' . join(self.pathSegments[0:-2], '/')
+    if toReturn !~# '\/$'
+        let toReturn .= '/'
+    endif
+    return toReturn
 endfunction
 
 "FUNCTION: Path.WinToUnixPath(pathstr){{{3
@@ -4122,4 +4126,4 @@ endfunction
 "reset &cpo back to users setting
 let &cpo = s:old_cpo
 
-" vim: set sw=4 sts=4 et fdm=marker:
+" vim: set sw=4 sts=4 et fdm=marker: