Fix std::out_of_range on old g++ compilers

ianfixes · ianfixes · commit 6302655acb5a · 2018-05-06T16:48:34.000-04:00
diff --git a/cpp/arduino/WString.h b/cpp/arduino/WString.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <stdlib.h>
+#include <stdexcept>
 #include <string.h>
 #include <algorithm>
 #include <iostream>
