fix: correct mistaken logging

Signed-off-by: Andrew Lilley Brinker <abrinker@mitre.org>

Author: alilleybrinker

src/middleware/authz.js

@@ -469,7 +469,7 @@ class Check {
   async run (req) {
     logger.debug({ message: `Running check ${this.#name}`, uuid: req.ctx.uuid })
     const result = await this.#check(req)
-    const resultStr = (result != null) ? 'passed' : 'failed'
+    const resultStr = (result == null) ? 'passed' : 'failed'
     logger.debug({ message: `Check ${this.#name} ${resultStr}`, uuid: req.ctx.uuid })
     // Convert `undefined` to `null`. For convenience, we let the underlying
     // `CheckFn` return `undefined` to indicate success, but it's probably