Fix bad format IID in VTableItem.WriteVTableMap

CHANGES.md

@@ -18,6 +18,7 @@ As of build 305, installation .exe files have been deprecated; see
 Coming in build 312, as yet unreleased
 --------------------------------------
 
+* Fixed bad format when `VTableItem.WriteVTableMap` returns an object derived from `IDispatch` (mhammond#2481, [@Avasam][Avasam])
 * Fixed missing version stamp on built `.dll` and `.exe` files (mhammond#2647, [@Avasam][Avasam])
 * Removed considerations for Windows 95/98/ME (mhammond#2400, [@Avasam][Avasam])
   This removes the following constants:

com/win32com/client/genpy.py

@@ -279,13 +279,7 @@ def WriteVTableMap(self, generator):
                 if item_num % 5 == 0:
                     print("\n\t\t\t", end=" ", file=stream)
                 defval = build.MakeDefaultArgRepr(arg)
-                if arg[3] is None:
-                    arg3_repr = None
-                else:
-                    arg3_repr = repr(arg[3])
-                print(
-                    repr((arg[0], arg[1], defval, arg3_repr)), ",", end=" ", file=stream
-                )
+                print(repr((arg[0], arg[1], defval, arg[3])), ",", end=" ", file=stream)
             print("],", end=" ", file=stream)
             print(repr(desc.funckind), ",", end=" ", file=stream)
             print(repr(desc.invkind), ",", end=" ", file=stream)