master fc281e0df3: Prevent Haiku display from being opened multiple times

[Po Lu]

branch: master
commit fc281e0df3d6f3ea359eae440cdae7e65412c06d
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Prevent Haiku display from being opened multiple times
    
    * src/haikufns.c (Fx_open_connection): Return if display
    connection already exists.
---
 src/haikufns.c | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/src/haikufns.c b/src/haikufns.c
index ea42dd0daa..69f502fb01 100644
--- a/src/haikufns.c
+++ b/src/haikufns.c
@@ -1844,16 +1844,29 @@ DEFUN ("x-open-connection", Fx_open_connection, 
Sx_open_connection,
        doc: /* SKIP: real doc in xfns.c.  */)
      (Lisp_Object display, Lisp_Object resource_string, Lisp_Object 
must_succeed)
 {
-  struct haiku_display_info *dpy_info;
+  struct haiku_display_info *dpyinfo;
   CHECK_STRING (display);
 
   if (NILP (Fstring_equal (display, build_string ("be"))))
-    !NILP (must_succeed) ? fatal ("Bad display") : error ("Bad display");
-  dpy_info = haiku_term_init ();
+    {
+      if (!NILP (must_succeed))
+       fatal ("Bad display");
+      else
+       error ("Bad display");
+    }
+
+  if (x_display_list)
+    return Qnil;
+
+  dpyinfo = haiku_term_init ();
 
-  if (!dpy_info)
-    !NILP (must_succeed) ? fatal ("Display not responding") :
-      error ("Display not responding");
+  if (!dpyinfo)
+    {
+      if (!NILP (must_succeed))
+       fatal ("Display not responding");
+      else
+       error ("Display not responding");
+    }
 
   return Qnil;
 }