vat-warehouse: include replay syscall results in slog

The results are coming directly from the transcript, so this isn't
recording anything new, but it's recording it in the most useful
place, and this allows the analysis tools to expect
consistently-matched syscall/syscall-result pairs.

packages/SwingSet/src/kernel/vat-warehouse.js

@@ -137,7 +137,8 @@ export function makeSyscallSimulator(
   };
 
   const syscallHandler = vso => {
-    kernelSlog.syscall(vatID, undefined, vso); // TODO: finish()?
+    // slog entries have no kernel-translated kso/ksr
+    const finish = kernelSlog.syscall(vatID, undefined, vso);
     const expected = syscallsExpected[syscallsMade.length];
     syscallsMade.push(vso);
     if (!expected) {
@@ -153,6 +154,7 @@ export function makeSyscallSimulator(
       throw error;
     }
     syscallStatus.push('ok');
+    finish(undefined, expected.r);
     return expected.r;
   };