CheckAccess: don't catch PermissionBackendException

By design, PermissionBackendException stands for some error
in the permission backend. It doesn't mean the user doesn't
hold the checked/tested permission. Thus this endpoint should
not catch PBE and treat it the same with AuthException.

Change-Id: Ibbb99fb3648a1bfdbdea922cdb94a77f6824c141

java/com/google/gerrit/server/restapi/project/CheckAccess.java

diff --git a/java/com/google/gerrit/server/restapi/project/CheckAccess.java b/java/com/google/gerrit/server/restapi/project/CheckAccess.java
index f98a96a..2c0653a 100644
--- a/java/com/google/gerrit/server/restapi/project/CheckAccess.java
+++ b/java/com/google/gerrit/server/restapi/project/CheckAccess.java
@@ -88,7 +88,7 @@
     IdentifiedUser user = userFactory.create(match.getId());
     try {
       permissionBackend.user(user).project(rsrc.getNameKey()).check(ProjectPermission.ACCESS);
-    } catch (AuthException | PermissionBackendException e) {
+    } catch (AuthException e) {
       info.message =
           String.format(
               "user %s (%s) cannot see project %s",
@@ -119,7 +119,7 @@
             .user(user)
             .ref(new Branch.NameKey(rsrc.getNameKey(), input.ref))
             .check(refPerm);
-      } catch (AuthException | PermissionBackendException e) {
+      } catch (AuthException e) {
         info.status = HttpServletResponse.SC_FORBIDDEN;
         info.message =
             String.format(