Omit substitute-command-keys code no longer needed

* src/doc.c (Fsubstitute_command_keys):
Remove duplicate initializations.

1 files changed, 7 insertions, 3 deletions

diff --git a/src/doc.c b/src/doc.c
index 37a731bfcec..4b91831c703 100644
--- a/src/doc.c
+++ b/src/doc.c
@@ -743,10 +743,12 @@ Otherwise, return a new string.  */)
   if (NILP (string))
     return Qnil;
 
+  /* If STRING contains non-ASCII unibyte data, process its
+     properly-encoded multibyte equivalent instead.  This simplifies
+     the implementation and is OK since substitute-command-keys is
+     intended for use only on text strings.  Keep STRING around, since
+     it will be returned if no changes occur.  */
   Lisp_Object str = Fstring_make_multibyte (string);
-  tem = Qnil;
-  keymap = Qnil;
-  name = Qnil;
 
   enum text_quoting_style quoting_style = text_quoting_style ();
 
@@ -905,6 +907,8 @@ Otherwise, return a new string.  */)
          }
 
         subst_string:
+          /* Convert non-ASCII unibyte data to properly-encoded multibyte,
+             for the same reason STRING was converted to STR.  */
           tem = Fstring_make_multibyte (tem);
           start = SDATA (tem);
           length = SCHARS (tem);