Patch #849350: Update to document bool return values. Backported to 2.3.
diff --git a/Doc/lib/libweakref.tex b/Doc/lib/libweakref.tex
index 6536048..4600f0a 100644
--- a/Doc/lib/libweakref.tex
+++ b/Doc/lib/libweakref.tex
@@ -186,7 +186,7 @@
 >>> r = weakref.ref(o)
 >>> o2 = r()
 >>> o is o2
-1
+True
 \end{verbatim}
 
 If the referent no longer exists, calling the reference object returns