Add ability to fetch CNode by NodeId

src/net.cpp

@@ -370,6 +370,16 @@ CNode* FindNode(const CService& addr)
     return NULL;
 }
 
+//TODO: This is used in only one place in main, and should be removed
+CNode* FindNode(const NodeId nodeid)
+{
+    LOCK(cs_vNodes);
+    BOOST_FOREACH(CNode* pnode, vNodes)
+        if (pnode->GetId() == nodeid)
+            return (pnode);
+    return NULL;
+}
+
 CNode* ConnectNode(CAddress addrConnect, const char *pszDest)
 {
     if (pszDest == NULL) {