Fixed namespace formatting across all files.

refs: #3735

Change-Id: Ia04f0895de9906e280d6140f775bb6609db714e6
diff --git a/src/route/nexthop.hpp b/src/route/nexthop.hpp
index 89741e7..72435cd 100644
--- a/src/route/nexthop.hpp
+++ b/src/route/nexthop.hpp
@@ -119,6 +119,6 @@
 std::ostream&
 operator<<(std::ostream& os, const NextHop& hop);
 
-}//namespace nlsr
+} // namespace nlsr
 
 #endif //NLSR_NEXTHOP_HPP