job-manager: underflow in alloc request to scheduler count about flux-core HOT 4 OPEN

diff --git a/src/modules/job-manager/alloc.c b/src/modules/job-manager/alloc.c
index 58cbe0c12..9ba82007f 100644
--- a/src/modules/job-manager/alloc.c
+++ b/src/modules/job-manager/alloc.c
@@ -182,7 +182,6 @@ static void alloc_response_cb (flux_t *h,
             goto teardown;
         }
         (void)json_object_del (R, "scheduling");
-        alloc->sent_count--;
 
         if (!job) {
             (void)free_request (alloc, id, R);
@@ -200,6 +199,7 @@ static void alloc_response_cb (flux_t *h,
             errno = EEXIST;
             goto teardown;
         }
+        alloc->sent_count--;
         job->R_redacted = json_incref (R);
         if (annotations_update_and_publish (ctx, job, annotations) < 0)
             flux_log_error (h, "annotations_update: id=%s", idf58 (id));