* editfns.c (Fchar_equal): Remove no-longer-needed workaround for

the race-condition problem the old DOWNCASE.

src/ChangeLog

@@ -8,6 +8,8 @@
 	EMACS_INT, since callers assume the returned value fits in int.
 	(upcase1): Likewise, for UPCASE_TABLE.
 	(uppercasep, lowercasep, upcase): New static inline functions.
+	* editfns.c (Fchar_equal): Remove no-longer-needed workaround for
+	the race-condition problem the old DOWNCASE.
 	* regex.c (CHARSET_LOOKUP_RANGE_TABLE_RAW, POP_FAILURE_REG_OR_COUNT):
 	Rename locals to avoid shadowing.

src/editfns.c

@@ -4222,9 +4222,6 @@ Case is ignored if `case-fold-search' is non-nil in the current buffer.  */)
   if (NILP (BVAR (current_buffer, case_fold_search)))
     return Qnil;
 
-  /* Do these in separate statements,
-     then compare the variables.
-     because of the way downcase uses temp variables.  */
   i1 = XFASTINT (c1);
   if (NILP (BVAR (current_buffer, enable_multibyte_characters))
       && ! ASCII_CHAR_P (i1))
@@ -4237,9 +4234,7 @@ Case is ignored if `case-fold-search' is non-nil in the current buffer.  */)
     {
       MAKE_CHAR_MULTIBYTE (i2);
     }
-  i1 = downcase (i1);
-  i2 = downcase (i2);
-  return (i1 == i2 ? Qt :  Qnil);
+  return (downcase (i1) == downcase (i2) ? Qt :  Qnil);
 }
 
 /* Transpose the markers in two regions of the current buffer, and