fixes #13219 (#13272)

Author: Araq

lib/system/channels.nim

@@ -367,7 +367,8 @@ proc sendImpl(q: PRawChannel, typ: PNimType, msg: pointer, noBlock: bool): bool
 proc send*[TMsg](c: var Channel[TMsg], msg: sink TMsg) {.inline.} =
   ## Sends a message to a thread. `msg` is deeply copied.
   discard sendImpl(cast[PRawChannel](addr c), cast[PNimType](getTypeInfo(msg)), unsafeAddr(msg), false)
-  wasMoved(msg)
+  when defined(gcDestructors):
+    wasMoved(msg)
 
 proc trySend*[TMsg](c: var Channel[TMsg], msg: sink TMsg): bool {.inline.} =
   ## Tries to send a message to a thread.
@@ -377,8 +378,9 @@ proc trySend*[TMsg](c: var Channel[TMsg], msg: sink TMsg): bool {.inline.} =
   ## Returns `false` if the message was not sent because number of pending items
   ## in the channel exceeded `maxItems`.
   result = sendImpl(cast[PRawChannel](addr c), cast[PNimType](getTypeInfo(msg)), unsafeAddr(msg), true)
-  if result:
-    wasMoved(msg)
+  when defined(gcDestructors):
+    if result:
+      wasMoved(msg)
 
 proc llRecv(q: PRawChannel, res: pointer, typ: PNimType) =
   q.ready = true