Added stub for CancelIo.
diff --git a/files/file.c b/files/file.c
index 4812d89..a9cedb3 100644
--- a/files/file.c
+++ b/files/file.c
@@ -1238,6 +1238,15 @@
/***********************************************************************
+ * CancelIo (KERNEL32.@)
+ */
+BOOL WINAPI CancelIo(HANDLE handle)
+{
+ FIXME("(%d) stub\n",handle);
+ return FALSE;
+}
+
+/***********************************************************************
* FILE_AsyncReadService (INTERNAL)
*
* This function is called while the client is waiting on the