winemac: Fail gracefully and early when run from a non-GUI session.

dlls/winemac.drv/Makefile.in

 MODULE    = winemac.drv
 IMPORTS   = user32 gdi32 advapi32
-EXTRALIBS = -framework AppKit -framework Carbon
+EXTRALIBS = -framework AppKit -framework Carbon -framework Security
 
 C_SRCS = \
 	display.c \

dlls/winemac.drv/macdrv_main.c

@@ -21,6 +21,8 @@
  */
 #include "config.h"
 
+#include <Security/AuthSession.h>
+
 #include "macdrv.h"
 #include "wine/server.h"
 
@@ -69,8 +71,15 @@ const char* debugstr_cf(CFTypeRef t)
  */
 static BOOL process_attach(void)
 {
+    SessionAttributeBits attributes;
+    OSStatus status;
+
     assert(NUM_EVENT_TYPES <= sizeof(macdrv_event_mask) * 8);
 
+    status = SessionGetInfo(callerSecuritySession, NULL, &attributes);
+    if (status != noErr || !(attributes & sessionHasGraphicAccess))
+        return FALSE;
+
     if ((thread_data_tls_index = TlsAlloc()) == TLS_OUT_OF_INDEXES) return FALSE;
 
     macdrv_err_on = ERR_ON(macdrv);