user32: define RealChildWindowFromPoint as a real stub.

[Louis. Lenders]

Skipped content of type multipart/alternative-------------- next part --------------
diff --git a/dlls/user32/user32.spec b/dlls/user32/user32.spec
index f857105..dcb1e6b 100644
--- a/dlls/user32/user32.spec
+++ b/dlls/user32/user32.spec
@@ -542,7 +542,7 @@ # @ stub PrivateSetRipFlags
 @ stdcall PtInRect(ptr double)
 @ stub QuerySendMessage
 # @ stub QueryUserCounters
-# @ stub RealChildWindowFromPoint
+@ stub RealChildWindowFromPoint
 @ stdcall RealGetWindowClass(long ptr long) RealGetWindowClassA
 @ stdcall RealGetWindowClassA(long ptr long)
 @ stdcall RealGetWindowClassW(long ptr long)