[BUG] SupertaskUtils::runSupertask fails if pretask CrackerBinaryType to provided $crackerBinaryType

[rixvet]

Current Behavior
Calling SupertaskUtils::runSupertask with pretask where CrackerBinaryType is not equal to $crackerId BinaryType will cause an error "Object of class DBA\CrackerBinary could not be converted to string"

Expected Behavior
function exectutes with error

Background
There are conditional statement if ($cracker->getCrackerBinaryTypeId() != $pretask->getCrackerBinaryTypeId()) {
which triggers an object returned instead of an Id.

Additional information
a) PoC fix

diff --git a/src/inc/utils/SupertaskUtils.class.php b/src/inc/utils/SupertaskUtils.class.php
index 004fb1cb..b4276577 100644
--- a/src/inc/utils/SupertaskUtils.class.php
+++ b/src/inc/utils/SupertaskUtils.class.php
@@ -278,7 +278,7 @@ class SupertaskUtils {
     foreach ($pretasks as $pretask) {
       $crackerBinaryId = $cracker->getId();
       if ($cracker->getCrackerBinaryTypeId() != $pretask->getCrackerBinaryTypeId()) {
-        $crackerBinaryId = CrackerBinaryUtils::getNewestVersion($pretask->getCrackerBinaryTypeId());
+        $crackerBinaryId = CrackerBinaryUtils::getNewestVersion($pretask->getCrackerBinaryTypeId())->getId();
       }

       $task = new Task(