PR #404: Include stddef.h for size_t

diff --git a/pigpio.h b/pigpio.h
index 2f9fc648cfab356bd71863fc9f8b963e380be44f..08aadac14bfc7bbdcec6c41d2a8962148bbabcdc 100644 (file)
--- a/pigpio.h
+++ b/pigpio.h
@@ -27,6 +27,7 @@ For more information, please refer to <http://unlicense.org/>
 #ifndef PIGPIO_H
 #define PIGPIO_H
 
+#include <stddef.h>
 #include <stdint.h>
 #include <pthread.h>