oleaut32: Return success from GetSizeMax if not dirty.

dlls/oleaut32/olepicture.c

@@ -1882,7 +1882,8 @@ static HRESULT WINAPI OLEPictureImpl_GetSizeMax(IPersistStream *iface, ULARGE_IN
                 FIXME("(%p), PICTYPE_BITMAP (format UNKNOWN, using BMP?) not implemented!\n",This);
                 break;
             }
-        }
+        } else hr = S_OK;
+
         break;
     case PICTYPE_METAFILE:
         FIXME("(%p), PICTYPE_METAFILE not implemented!\n",This);

dlls/oleaut32/tests/olepicture.c

@@ -1262,7 +1262,6 @@ static void test_load_save_bmp(void)
 
     maxsize.QuadPart = 0;
     hr = IPersistStream_GetSizeMax(src_stream, &maxsize);
-    todo_wine
     ok(hr == S_OK, "GetSizeMax error %#lx\n", hr);
     ok(maxsize.QuadPart == 74, "expected 74, got %s\n", wine_dbgstr_longlong(maxsize.QuadPart));