File ntsync-envvar-disable.patch of Package wine

Makes ntsync easily disabled with the env var WINE_NO_NTSYNC.
For easier testing.
diff --git a/server/inproc_sync.c b/server/inproc_sync.c
index 66d3fcc..d9255a4 100644
--- a/server/inproc_sync.c
+++ b/server/inproc_sync.c
@@ -48,7 +48,14 @@
 int get_inproc_device_fd(void)
 {
     static int fd = -2;
-    if (fd == -2) fd = open( "/dev/ntsync", O_CLOEXEC | O_RDONLY );
+    if (fd == -2)
+    {
+        char *no_ntsync = getenv("WINE_NO_NTSYNC");
+        if (no_ntsync != NULL && no_ntsync[0] != '0')
+            fd = -1;
+        else
+            fd = open( "/dev/ntsync", O_CLOEXEC | O_RDONLY );
+    }
     return fd;
 }