Merge pull request #2720 from jbj/taint-diff-import

C++: Always use the old library for the diff test

Author: MathiasVP

cpp/ql/test/library-tests/dataflow/DefaultTaintTracking/test_diff.ql

@@ -1,6 +1,6 @@
 import cpp
 import semmle.code.cpp.security.Security
-import semmle.code.cpp.security.TaintTracking as ASTTaintTracking
+import semmle.code.cpp.security.TaintTrackingImpl as ASTTaintTracking
 import semmle.code.cpp.ir.dataflow.DefaultTaintTracking as IRDefaultTaintTracking
 
 predicate astFlow(Expr source, Element sink) { ASTTaintTracking::tainted(source, sink) }