table: NameTree code style corrections

refs #3687

Change-Id: I25cfac1d8b11236c251c2ab717facb82b62dcb10
diff --git a/daemon/table/name-tree-entry.cpp b/daemon/table/name-tree-entry.cpp
index b094e38..c0bc932 100644
--- a/daemon/table/name-tree-entry.cpp
+++ b/daemon/table/name-tree-entry.cpp
@@ -29,8 +29,8 @@
 namespace name_tree {
 
 Node::Node()
-  : m_prev(0)
-  , m_next(0)
+  : m_prev(nullptr)
+  , m_next(nullptr)
 {
 }
 
@@ -38,9 +38,9 @@
 {
   // erase the Name Tree Nodes that were created to
   // resolve hash collisions
-  // So before erasing a single node, make sure its m_next == 0
+  // So before erasing a single node, make sure its m_next == nullptr
   // See eraseEntryIfEmpty in name-tree.cpp
-  if (m_next != 0)
+  if (m_next != nullptr)
     delete m_next;
 }
 
@@ -50,10 +50,6 @@
 {
 }
 
-Entry::~Entry()
-{
-}
-
 bool
 Entry::isEmpty() const
 {