disable lent with orc until 2.2 (#49)

nim-lang/Nim#23973

results.nim

@@ -377,12 +377,17 @@ const
 
   resultsGenericsOpenSymWorkaroundHint* {.booldefine.} = true
 
-  resultsLent {.booldefine.} = (NimMajor, NimMinor, NimPatch) >= (2, 0, 8)
+  resultsLent {.booldefine.} =
+    (NimMajor, NimMinor, NimPatch) >= (2, 2, 0) or
+    (defined(gcRefc) and ((NimMajor, NimMinor, NimPatch) >= (2, 0, 8)))
     ## Enable return of `lent` types - this *mostly* works in Nim 1.6.18+ but
     ## there have been edge cases reported as late as 1.6.14 - YMMV -
     ## conservatively, `lent` is therefore enabled only with the latest Nim
     ## version at the time of writing, where it could be verified to work with
     ## several large applications.
+    ##
+    ## ORC is not expected to work until 2.2.
+    ## https://github.com/nim-lang/Nim/issues/23973
 
 when resultsLent:
   template maybeLent(T: untyped): untyped =