patch 8.1.1301: when compiled with VIMDLL some messages are not shown

Problem:    When compiled with VIMDLL some messages are not shown.
Solution:   Set/reset gui.in_use and gui.starting as needed. (Ken Takata,
            closes #4361)
diff --git a/src/message.c b/src/message.c
index 038ccd6..7c25658 100644
--- a/src/message.c
+++ b/src/message.c
@@ -2977,7 +2977,7 @@
     int		len;
 #endif
 
-#if (defined(UNIX) || defined(FEAT_GUI)) && (!defined(ALWAYS_USE_GUI) || !defined(VIMDLL))
+#if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) && !defined(VIMDLL)
     /* On Unix use stderr if it's a tty.
      * When not going to start the GUI also use stderr.
      * On Mac, when started from Finder, stderr is the console. */
@@ -3080,7 +3080,7 @@
     void
 mch_msg(char *str)
 {
-#if (defined(UNIX) || defined(FEAT_GUI)) && (!defined(ALWAYS_USE_GUI) || !defined(VIMDLL))
+#if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) && !defined(VIMDLL)
     /* On Unix use stdout if we have a tty.  This allows "vim -h | more" and
      * uses mch_errmsg() when started from the desktop.
      * When not going to start the GUI also use stdout.