tweaks: remove the fiddling with an unrelated setting

CONST_UPDATE is only relevant when in the main menu, not when in the
browser.  So, check for that condition, instead of saving, changing,
and then restoring the setting.

src/browser.c

@@ -48,7 +48,6 @@ char *do_browser(char *path, DIR *dir)
 {
     char *retval = NULL;
     int kbinput;
-    bool old_const_update = ISSET(CONST_UPDATE);
     char *present_name = NULL;
 	/* The name of the currently selected file, or of the directory we
 	 * were in before backing up to "..". */
@@ -62,8 +61,6 @@ char *do_browser(char *path, DIR *dir)
     blank_statusbar();
     bottombars(MBROWSER);
 
-    UNSET(CONST_UPDATE);
-
   read_directory_contents:
 	/* We come here when we refresh or select a new directory. */
 
@@ -336,10 +333,9 @@ char *do_browser(char *path, DIR *dir)
 	} else
 	    unbound_key(kbinput);
     }
+
     titlebar(NULL);
     edit_refresh();
-    if (old_const_update)
-	SET(CONST_UPDATE);
 
     free(path);
 

src/winio.c

@@ -34,8 +34,7 @@ static int *key_buffer = NULL;
 static size_t key_buffer_len = 0;
 	/* The length of the keystroke buffer. */
 static int statusblank = 0;
-	/* The number of keystrokes left after we call statusbar(),
-	 * before we actually blank the statusbar. */
+	/* The number of keystrokes left before we blank the statusbar. */
 static bool suppress_cursorpos = FALSE;
 	/* Should we temporarily disable constant cursor position
 	 * display? */
@@ -1704,7 +1703,7 @@ void check_statusblank(void)
     if (statusblank > 0) {
 	statusblank--;
 
-	if (statusblank == 0 && !ISSET(CONST_UPDATE)) {
+	if (statusblank == 0 && (currmenu != MMAIN || !ISSET(CONST_UPDATE))) {
 	    blank_statusbar();
 	    wnoutrefresh(bottomwin);
 	    reset_cursor();