ole32/itemmoniker: Fix argument handling in RelativePathTo().

dlls/ole32/itemmoniker.c

@@ -714,17 +714,14 @@ static HRESULT WINAPI ItemMonikerImpl_CommonPrefixWith(IMoniker *iface, IMoniker
     return MonikerCommonPrefixWith(iface, other, prefix);
 }
 
-/******************************************************************************
- *        ItemMoniker_RelativePathTo
- ******************************************************************************/
-static HRESULT WINAPI ItemMonikerImpl_RelativePathTo(IMoniker* iface,IMoniker* pmOther, IMoniker** ppmkRelPath)
+static HRESULT WINAPI ItemMonikerImpl_RelativePathTo(IMoniker *iface, IMoniker *other, IMoniker **result)
 {
-    TRACE("(%p,%p,%p)\n",iface,pmOther,ppmkRelPath);
+    TRACE("%p, %p, %p.\n", iface, other, result);
 
-    if (ppmkRelPath==NULL)
-        return E_POINTER;
+    if (!other || !result)
+        return E_INVALIDARG;
 
-    *ppmkRelPath=0;
+    *result = NULL;
 
     return MK_E_NOTBINDABLE;
 }

dlls/ole32/tests/moniker.c

@@ -2376,7 +2376,7 @@ static void test_item_moniker(void)
         "Moniker_IsRunning",
         NULL
     };
-    IMoniker *moniker, *moniker2, *moniker3, *reduced, *anti, *inverse, *c;
+    IMoniker *moniker, *moniker1, *moniker2, *moniker3, *reduced, *anti, *inverse, *c;
     DWORD i, hash, eaten, cookie;
     HRESULT hr;
     IBindCtx *bindctx;
@@ -2757,6 +2757,26 @@ todo_wine
     IMoniker_Release(moniker2);
 
     IMoniker_Release(moniker);
+
+    /* RelativePathTo() */
+    hr = create_moniker_from_desc("I1", &moniker);
+    ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
+    hr = create_moniker_from_desc("I2", &moniker1);
+    ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
+
+    hr = IMoniker_RelativePathTo(moniker, NULL, NULL);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#x.\n", hr);
+    hr = IMoniker_RelativePathTo(moniker, NULL, &moniker2);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#x.\n", hr);
+    hr = IMoniker_RelativePathTo(moniker, moniker1, NULL);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#x.\n", hr);
+    moniker2 = (void *)0xdeadbeef;
+    hr = IMoniker_RelativePathTo(moniker, moniker1, &moniker2);
+    ok(hr == MK_E_NOTBINDABLE, "Unexpected hr %#x.\n", hr);
+    ok(!moniker2, "Unexpected pointer.\n");
+
+    IMoniker_Release(moniker1);
+    IMoniker_Release(moniker);
 }
 
 static void stream_write_dword(IStream *stream, DWORD value)