code style: Don't use std:: inside .cpp files.
diff --git a/ndn-cpp/encoding/binary-xml-structure-decoder.hpp b/ndn-cpp/encoding/binary-xml-structure-decoder.hpp
index 9ffd72b..2707763 100644
--- a/ndn-cpp/encoding/binary-xml-structure-decoder.hpp
+++ b/ndn-cpp/encoding/binary-xml-structure-decoder.hpp
@@ -36,7 +36,7 @@
   {
     ndn_Error error;
     if ((error = ndn_BinaryXmlStructureDecoder_findElementEnd(this, input, inputLength)))
-      throw std::runtime_error(ndn_getErrorString(error));
+      throw runtime_error(ndn_getErrorString(error));
     return gotElementEnd();
   }