(syms_of_editfns): Just staticpro Vuser...name

and Vsystem_name; don't make them Lisp variables.

src/editfns.c

@@ -1492,17 +1492,10 @@ Case is ignored if `case-fold-search' is non-nil in the current buffer.")
 void
 syms_of_editfns ()
 {
-  DEFVAR_LISP ("system-name", &Vsystem_name,
-	       "The name of the machine Emacs is running on.");
-  
-  DEFVAR_LISP ("user-full-name", &Vuser_full_name,
-	       "The full name of the user logged in.");
-
-  DEFVAR_LISP ("user-name", &Vuser_name,
-	       "The user's name, based on the effective uid.");
-
-  DEFVAR_LISP ("user-real-name", &Vuser_real_name,
-	       "The user's name, base upon the real uid.");
+  staticpro (&Vuser_name);
+  staticpro (&Vuser_full_name);
+  staticpro (&Vuser_real_name);
+  staticpro (&Vsystem_name);
 
   defsubr (&Schar_equal);
   defsubr (&Sgoto_char);