[stmt.return] Improve CWG2426 wording

Author: languagelawyer

source/statements.tex

@@ -847,7 +847,7 @@
 }
 \end{codeblock}
 \end{example}
-The destructor for the returned object
+The destructor for the result object
 is potentially invoked~(\ref{class.dtor}, \ref{except.ctor}).
 \begin{example}
 \begin{codeblock}