Issue #7819: Check sys.call_tracing() arguments types.

py3k was already patched by issue #3661.
diff --git a/Misc/NEWS b/Misc/NEWS
index 5f64b8a..6b0f121 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,8 @@
 Core and Builtins
 -----------------
 
+- Issue #7819: Check sys.call_tracing() arguments types.
+
 - Issue #7788: Fix an interpreter crash produced by deleting a list
   slice with very large step value.