include ctime needed for newest GCC (#8722)

Jason2866 · web-flow · commit 9e5264770972 · 2023-10-06T13:45:06.000+03:00
diff --git a/cores/esp32/HardwareSerial.cpp b/cores/esp32/HardwareSerial.cpp
@@ -2,6 +2,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <inttypes.h>
+#include <ctime>
 
 #include "pins_arduino.h"
 #include "HardwareSerial.h"
