[silgen] Add cleanups for trivial values converted to non-trivial via copyable_to_moveonlywrapped.

The reason why this is necessary is that the trivial input value doesn't have a
cleanup associated with it, but the result of the instruction is owned. So
otherwise we will not have a cleanup for the result, resulting in an OSSA error.

Author: gottesmm

lib/SILGen/SILGenBuilder.cpp

@@ -927,8 +927,10 @@ SILGenBuilder::createCopyableToMoveOnlyWrapperValue(SILLocation loc,
                                                     ManagedValue value) {
   assert(value.isPlusOne(SGF) && "Argument must be at +1!");
   CleanupCloner cloner(*this, value);
-  auto *mdi = SILBuilder::createCopyableToMoveOnlyWrapperValue(
-      loc, value.forward(getSILGenFunction()));
+  SILValue v = value.forward(getSILGenFunction());
+  auto *mdi = SILBuilder::createCopyableToMoveOnlyWrapperValue(loc, v);
+  if (v->getType().isTrivial(getFunction()))
+    return SGF.emitManagedRValueWithCleanup(mdi);
   return cloner.clone(mdi);
 }