tweaks: replace some unneeded direct calls of edit_refresh()

src/nano.c

@@ -1401,9 +1401,7 @@ void do_toggle(int flag)
 	    signal_init();
 	    break;
 	case WHITESPACE_DISPLAY:
-	    titlebar(NULL);
-	    edit_refresh();
-	    break;
+	    titlebar(NULL);	/* Fall through. */
 #ifndef DISABLE_COLOR
 	case NO_COLOR_SYNTAX:
 #endif

src/search.c

@@ -103,7 +103,7 @@ void search_replace_abort(void)
 {
 #ifndef NANO_TINY
     if (openfile->mark_set)
-	edit_refresh();
+	refresh_needed = TRUE;
 #endif
 #ifdef HAVE_REGEX_H
     regexp_cleanup();
@@ -826,8 +826,7 @@ void do_replace(void)
     openfile->edittop = edittop_save;
     openfile->current = begin;
     openfile->current_x = begin_x;
-
-    edit_refresh();
+    refresh_needed = TRUE;
 
     if (numreplaced >= 0)
 	statusline(HUSH, P_("Replaced %lu occurrence",

src/text.c

@@ -63,8 +63,8 @@ void do_mark(void)
 	statusbar(_("Mark Unset"));
 	openfile->mark_begin = NULL;
 	openfile->mark_begin_x = 0;
+	refresh_needed = TRUE;
     }
-    edit_refresh();
 }
 #endif /* !NANO_TINY */