C++: Add change note.

MathiasVP · MathiasVP · commit 32d82380f18e · 2023-10-16T11:08:27.000+01:00
diff --git a/cpp/ql/src/change-notes/2023-10-16-redundant-null-check-simple.md b/cpp/ql/src/change-notes/2023-10-16-redundant-null-check-simple.md
@@ -0,0 +1,6 @@
+---
+category: newQuery
+---
+* The query `cpp/redundant-null-check-simple` has been promoted to Code Scanning. The query finds cases where a pointer is compared to null after it has already been dereferenced. Such comparisons likely indicate a bug at the place where the pointer is dereferenced, or where the pointer is compared to null.
+
+Note: This query was incorrectly noted as being promoted to Code Scanning in CodeQL version 2.14.6.
