urlmon: add a stub for RegisterMediaTypes()

[Austin English]

Fixes http://bugs.winehq.org/show_bug.cgi?id=28429

-- 
-Austin
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diff --git a/dlls/urlmon/urlmon.spec b/dlls/urlmon/urlmon.spec
index d3867e1..14b1aba 100644
--- a/dlls/urlmon/urlmon.spec
+++ b/dlls/urlmon/urlmon.spec
@@ -72,7 +72,7 @@
 @ stdcall RegisterBindStatusCallback(ptr ptr ptr long)
 @ stdcall RegisterFormatEnumerator(ptr ptr long)
 @ stub RegisterMediaTypeClass
-@ stub RegisterMediaTypes
+@ stdcall RegisterMediaTypes(long ptr ptr)
 @ stdcall ReleaseBindInfo(ptr)
 @ stdcall RevokeBindStatusCallback(ptr ptr)
 @ stdcall RevokeFormatEnumerator(ptr ptr)
diff --git a/dlls/urlmon/urlmon_main.c b/dlls/urlmon/urlmon_main.c
index 5ba9c00..faa360b 100644
--- a/dlls/urlmon/urlmon_main.c
+++ b/dlls/urlmon/urlmon_main.c
@@ -935,3 +935,15 @@ BOOL WINAPI URLMON_423(DWORD unknown1, DWORD unknown2, DWORD unknown3, DWORD unk
     FIXME("stub: %d %d %d %d\n", unknown1, unknown2, unknown3, unknown4);
     return FALSE;
 }
+
+/***********************************************************************
+ *            RegisterMediaTypes
+ *    Added in IE3, regsiters known MIME-type strings.
+ */ 
+
+HRESULT WINAPI RegisterMediaTypes(UINT types, LPCSTR *szTypes, CLIPFORMAT *cfTypes)
+{
+   FIXME("stub: %u %p %p\n", types, szTypes, cfTypes);
+   return E_INVALIDARG;
+}
+