Merge pull request #13124 from michaelnebel/csharp/dataflowconsistency-identity-only-source

C#: Only report dataflow inconsistencies (step to itself) in source code.

Author: michaelnebel

csharp/ql/consistency-queries/DataFlowConsistency.ql

@@ -72,5 +72,5 @@ private class MyConsistencyConfiguration extends ConsistencyConfiguration {
 
   override predicate reverseReadExclude(Node n) { n.asExpr() = any(AwaitExpr ae).getExpr() }
 
-  override predicate identityLocalStepExclude(Node n) { this.missingLocationExclude(n) }
+  override predicate identityLocalStepExclude(Node n) { n.getLocation().getFile().fromLibrary() }
 }