[JENKINS-43507] Findbugs catches bugs again!!!

src/main/java/jenkins/scm/api/trait/SCMHeadAuthority.java

@@ -116,7 +116,7 @@ public final boolean isTrusted(@NonNull SCMSourceRequest request, @CheckForNull
        return isApplicableTo(request)
                && isApplicableTo(revision.getHead())
                && isApplicableTo(revision)
                && checkTrusted((S) request, (H) revision);
                && checkTrusted((S) request, (R) revision);
    }

    /**
@@ -141,6 +141,7 @@ public final boolean isTrusted(@NonNull SCMSourceRequest request, @CheckForNull
     * @throws IOException          if there was an I/O error trying to establish the trust status.
     * @throws InterruptedException if interrupted while trying to establing the trust status.
     */
    @SuppressWarnings("unchecked")
    @OverrideMustInvoke
    protected boolean checkTrusted(@NonNull S request, @NonNull R revision) throws IOException, InterruptedException {
        return checkTrusted(request, (H) revision.getHead());