C++: Fix query compliation

Apparently some queries we skipped in the testing I did locally.

Author: jketema

cpp/ql/src/Security/CWE/CWE-020/ir/ExternalAPIs.qll

@@ -13,7 +13,7 @@ class UntrustedExternalApiDataNode extends ExternalApiDataNode {
   UntrustedExternalApiDataNode() { UntrustedDataToExternalApiFlow::hasFlow(_, this) }
 
   /** Gets a source of untrusted data which is passed to this external API data node. */
-  DataFlow::Node getAnUntrustedSource() { UntrustedDataToExternalApiConfig::hasFlow(result, this) }
+  DataFlow::Node getAnUntrustedSource() { UntrustedDataToExternalApiFlow::hasFlow(result, this) }
 }
 
 /** DEPRECATED: Alias for UntrustedExternalApiDataNode */

cpp/ql/src/Security/CWE/CWE-020/ir/ExternalAPIsSpecific.qll

@@ -58,9 +58,9 @@ deprecated class UntrustedDataToExternalAPIConfig = UntrustedDataToExternalApiCo
 
 /** A configuration for tracking flow from `RemoteFlowSource`s to `ExternalApiDataNode`s. */
 module UntrustedDataToExternalApiConfig implements DataFlow::ConfigSig {
-  override predicate isSource(DataFlow::Node source) { source instanceof RemoteFlowSource }
+  predicate isSource(DataFlow::Node source) { source instanceof RemoteFlowSource }
 
-  override predicate isSink(DataFlow::Node sink) { sink instanceof ExternalApiDataNode }
+  predicate isSink(DataFlow::Node sink) { sink instanceof ExternalApiDataNode }
 }
 
 module UntrustedDataToExternalApiFlow = TaintTracking::Make<UntrustedDataToExternalApiConfig>;