fix build with gcc 4.7

Dushistov · Dushistov · commit a007db1cf961 · 2018-03-22T02:57:22.000+03:00
diff --git a/qtmonkey_gui.cpp b/qtmonkey_gui.cpp
@@ -10,6 +10,7 @@
 #include <cassert>
 #include <cstdlib>
 #include <cstring>
+#include <stdexcept>
 
 #include "common.hpp"
 #include "json11.hpp"
