patch 7.4.1690

Problem:    Can't compile with the conceal feature but without multi-byte.
Solution:   Adjust #ifdef. (Owen Leibman)

Author: brammool

src/eval.c

@@ -12786,7 +12786,7 @@ f_getmatches(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
 	    dict_add_nr_str(dict, "group", 0L, syn_id2name(cur->hlg_id));
 	    dict_add_nr_str(dict, "priority", (long)cur->priority, NULL);
 	    dict_add_nr_str(dict, "id", (long)cur->id, NULL);
-# ifdef FEAT_CONCEAL
+# if defined(FEAT_CONCEAL) && defined(FEAT_MBYTE)
 	    if (cur->conceal_char)
 	    {
 		char_u buf[MB_MAXBYTES + 1];

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1690,
 /**/
     1689,
 /**/

src/window.c

@@ -6746,11 +6746,11 @@ match_add(
     m->match.regprog = regprog;
     m->match.rmm_ic = FALSE;
     m->match.rmm_maxcol = 0;
-#ifdef FEAT_CONCEAL
+# if defined(FEAT_CONCEAL) && defined(FEAT_MBYTE)
     m->conceal_char = 0;
     if (conceal_char != NULL)
 	m->conceal_char = (*mb_ptr2char)(conceal_char);
-#endif
+# endif
 
     /* Set up position matches */
     if (pos_list != NULL)