Adds include stdlib.h

Veijo Pesonen · Veijo Pesonen · commit 22bd8de5c376 · 2018-11-09T08:14:47.000+02:00
diff --git a/ESP8266/ESP8266.cpp b/ESP8266/ESP8266.cpp
@@ -16,6 +16,7 @@
 
 #include <string.h>
 #include <stdint.h>
+#include <stdlib.h>
 
 #include "ESP8266.h"
 #include "features/netsocket/nsapi_types.h"
