Add include for std::bind.

src/test/scheduler_tests.cpp

@@ -9,6 +9,7 @@
 #include <boost/test/unit_test.hpp>
 #include <boost/thread/thread.hpp>
 
+#include <functional>
 #include <mutex>
 
 BOOST_AUTO_TEST_SUITE(scheduler_tests)

src/test/transaction_tests.cpp

@@ -24,6 +24,7 @@
 #include <util/strencodings.h>
 #include <validation.h>
 
+#include <functional>
 #include <map>
 #include <string>