Apply suggestions from code review

Co-authored-by: Bénédikt Tran <[email protected]>

Author: skirpichev

Doc/whatsnew/3.15.rst

@@ -109,7 +109,7 @@ math
 ----
 
 * Provide C99 Annex F return values for :mod:`math`'s functions as the
-  "value" attribute of the ValueError exception object.
+  ``value`` attribute of the :exc:`ValueError` exception object.
   (Contributed by Sergey B Kirpichev in :gh:`133895`.)
 
 

Misc/NEWS.d/next/Library/2025-06-01-16-10-07.gh-issue-133895.1-SE2w.rst

@@ -1,2 +1,2 @@
-Provide C99 Annex F return values for :mod:`math`'s functions as the "value"
-attribute of the ValueError exception object.  Patch by Sergey B Kirpichev.
+Provide C99 Annex F return values for :mod:`math`'s functions as the ``value``
+attribute of the :exc:`ValueError` exception object.  Patch by Sergey B Kirpichev.

Modules/mathmodule.c

@@ -849,7 +849,7 @@ set_exc_value(double x)
     if (value) {
         PyObject_SetAttrString(exc, "value", value);
     }
-    Py_DECREF(value);
+    Py_XDECREF(value);
     PyErr_SetRaisedException(exc);
 }