Close #18596: Support address sanity checking in clang/GCC

This patch appropriately marks known false alarms in the
small object allocator when address sanity checking is
enabled (patch contributed by Dhiru Kholia).
diff --git a/Misc/ACKS b/Misc/ACKS
index cb823d1..5b7b630 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -650,6 +650,7 @@
 Magnus Kessler
 Lawrence Kesteloot
 Vivek Khera
+Dhiru Kholia
 Mads Kiilerich
 Jason Killen
 Jan Kim