JS: Update SanitizerGuardNode use in BasicTaintTracking test

Author: asgerf

javascript/ql/test/library-tests/TaintTracking/BasicTaintTracking.ql

@@ -34,23 +34,26 @@ deprecated class LegacyConfig extends TaintTracking::Configuration {
   }
 
   override predicate isSanitizerGuard(TaintTracking::SanitizerGuardNode node) {
-    node instanceof BasicSanitizerGuard or
+    node instanceof BasicSanitizerGuardLegacy or
     node instanceof TaintTracking::AdHocWhitelistCheckSanitizer
   }
 }
 
 deprecated import testUtilities.LegacyDataFlowDiff::DataFlowDiff<TestFlow, LegacyConfig>
 
-class BasicSanitizerGuard extends TaintTracking::SanitizerGuardNode, DataFlow::CallNode {
+class BasicSanitizerGuard extends DataFlow::CallNode {
   BasicSanitizerGuard() { this = getACall("isSafe") }
 
-  override predicate sanitizes(boolean outcome, Expr e) { this.blocksExpr(outcome, e) }
-
   predicate blocksExpr(boolean outcome, Expr e) {
     outcome = true and e = this.getArgument(0).asExpr()
   }
 }
 
+deprecated class BasicSanitizerGuardLegacy extends TaintTracking::SanitizerGuardNode instanceof BasicSanitizerGuard
+{
+  override predicate sanitizes(boolean outcome, Expr e) { super.blocksExpr(outcome, e) }
+}
+
 query predicate flow = TestFlow::flow/2;
 
 deprecated class Consistency extends ConsistencyConfiguration {