Added patch to avoid crashing when broken app tries to release surface although refcount is zero.

patches/d3d9-Surface_Refcount/0001-d3d9-Don-t-decrease-surface-refcount-when-its-alread.patch

@@ -0,0 +1,29 @@
+From ee74f6d71079cda75ba94841e4369c519489c879 Mon Sep 17 00:00:00 2001
+From: Henri Verbeet <hverbeet@codeweavers.com>
+Date: Tue, 11 Nov 2014 22:32:00 +0100
+Subject: d3d9: Don't decrease surface refcount when its already zero.
+
+---
+ dlls/d3d9/surface.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/dlls/d3d9/surface.c b/dlls/d3d9/surface.c
+index e5eb11f..2aab5f3 100644
+--- a/dlls/d3d9/surface.c
++++ b/dlls/d3d9/surface.c
+@@ -91,6 +91,12 @@ static ULONG WINAPI d3d9_surface_Release(IDirect3DSurface9 *iface)
+         return IDirect3DBaseTexture9_Release(&surface->texture->IDirect3DBaseTexture9_iface);
+     }
+ 
++    if (!surface->resource.refcount)
++    {
++        ERR("Surface doesn't have any references.\n");
++        return 0;
++    }
++
+     refcount = InterlockedDecrement(&surface->resource.refcount);
+     TRACE("%p decreasing refcount to %u.\n", iface, refcount);
+ 
+-- 
+2.1.3
+

patches/d3d9-Surface_Refcount/definition

@@ -0,0 +1,4 @@
+Author: Henri Verbeet
+Subject: Don't decrease surface refcount when its already zero.
+Revision: 1
+Fixes: [18477] Avoid crashing when broken app tries to release surface although refcount is zero