patch 8.1.0178: warning for passing pointer to non-pointer argument

Problem:    Warning for passing pointer to non-pointer argument.
Solution:   Use zero instead of NULL.

src/if_ole.cpp

@@ -759,7 +759,7 @@ extern "C" void InitOLE(int *pbDoRestart)
     hr = RegisterActiveObject(
 	app,
 	MYCLSID,
-	NULL,
+	0,
 	&app_id);
 
     if (FAILED(hr))

src/version.c

@@ -789,6 +789,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    178,
 /**/
     177,
 /**/