ddraw/tests: Add some missing DestroyWindow() calls.

dlls/ddraw/tests/ddraw2.c

@@ -3373,6 +3373,7 @@ static void test_lighting_interface_versions(void)
     IDirect3D2_Release(d3d);
     ref = IDirectDraw2_Release(ddraw);
     ok(ref == 0, "Ddraw object not properly released, refcount %u.\n", ref);
+    DestroyWindow(window);
 }
 
 static struct

dlls/ddraw/tests/ddraw4.c

@@ -3654,6 +3654,7 @@ static void test_lighting_interface_versions(void)
     ok(ref == 0, "Device not properly released, refcount %u.\n", ref);
     ref = IDirect3D3_Release(d3d);
     ok(ref == 0, "D3d not properly released, refcount %u.\n", ref);
+    DestroyWindow(window);
 }
 
 static struct

dlls/ddraw/tests/ddraw7.c

@@ -1260,6 +1260,7 @@ static void test_texture_load_ckey(void)
     IDirectDrawSurface7_Release(src);
     IDirectDraw7_Release(ddraw);
     IDirect3DDevice7_Release(device);
+    DestroyWindow(window);
 }
 
 static void test_zenable(void)
@@ -3467,6 +3468,7 @@ static void test_lighting_interface_versions(void)
     IDirectDrawSurface7_Release(rt);
     ref = IDirect3DDevice7_Release(device);
     ok(ref == 0, "Device not properly released, refcount %u.\n", ref);
+    DestroyWindow(window);
 }
 
 static struct