Merge "<bionic/macros.h>: include <stddef.h> for size_t." into main am: f9e2af0719

Original change: https://android-review.googlesource.com/c/platform/bionic/+/3403240

Change-Id: Ia5ad93305a363e2d6b60cc0aa62c3edb3219d344
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/libc/platform/bionic/macros.h b/libc/platform/bionic/macros.h
index b2d6f96..1e7ca88 100644
--- a/libc/platform/bionic/macros.h
+++ b/libc/platform/bionic/macros.h
@@ -16,6 +16,7 @@
 
 #pragma once
 
+#include <stddef.h>
 #include <stdint.h>
 
 #define BIONIC_DISALLOW_COPY_AND_ASSIGN(TypeName) \