src: Replace implicit conversion of st::string to ndn::Name

Fixed two places where std::string was passed to function accepting ndn::Name.
Although no compilation error was shown, from NLSR log investigation it is
found that name is garbled in CentOs because of that string passing.

Refs: #1713

Change-Id: I8a9fc00144df383debaac1e1c418fca14617f113
diff --git a/src/lsa.cpp b/src/lsa.cpp
index 2e933ce..90f3188 100644
--- a/src/lsa.cpp
+++ b/src/lsa.cpp
@@ -103,7 +103,7 @@
     return false;
   }
   for (uint32_t i = 0; i < numName; i++) {
-    string name(*tok_iter++);
+    ndn::Name name(*tok_iter++);
     addName(name);
   }
   return true;
@@ -283,7 +283,7 @@
   }
   for (uint32_t i = 0; i < numLink; i++) {
     try {
-      string adjName(*tok_iter++);
+      ndn::Name adjName(*tok_iter++);
       std::string connectingFaceUri(*tok_iter++);
       double linkCost = boost::lexical_cast<double>(*tok_iter++);
       Adjacent adjacent(adjName, connectingFaceUri, linkCost, 0, 0);