rename log macros to comply with ISO C++ standard

refs: #4341

Change-Id: Idb05f59660f42c01a7bf014c6fff4125a28327f2
diff --git a/src/route/fib-entry.cpp b/src/route/fib-entry.cpp
index 91eb422..4a4498a 100644
--- a/src/route/fib-entry.cpp
+++ b/src/route/fib-entry.cpp
@@ -28,8 +28,8 @@
 void
 FibEntry::writeLog()
 {
-  _LOG_DEBUG("Name Prefix: " << m_name);
-  _LOG_DEBUG("Seq No: " << m_seqNo);
+  NLSR_LOG_DEBUG("Name Prefix: " << m_name);
+  NLSR_LOG_DEBUG("Seq No: " << m_seqNo);
   m_nexthopList.writeLog();
 }