Fix OS X build.

include/dhtcpp/value.h

@@ -79,7 +79,7 @@ private:
 /**
  * Dummy function used to disable logging
  */
-constexpr int NOLOG(char const*, va_list) { return 0; }
+inline void NOLOG(char const*, va_list) {}
 
 
 class Value;

src/dht.cpp

@@ -43,6 +43,7 @@ extern "C" {
 #endif
 
 #include <algorithm>
+#include <random> //binomial_distribution
 #include <sstream>
 
 #include <unistd.h>