C++: Fix comments.

Author: geoffw0

cpp/ql/src/semmle/code/cpp/models/implementations/StdPair.qll

@@ -11,16 +11,16 @@ class StdPairConstructor extends Constructor, TaintFunction {
   StdPairConstructor() { this.getDeclaringType().hasQualifiedName("std", "pair") }
 
   /**
-   * Gets the index of a parameter to this function that is a reference to the
-   * value type of the container.
+   * Gets the index of a parameter to this function that is a reference to
+   * either value type of the pair.
    */
   int getAValueTypeParameterIndex() {
     getParameter(result).getUnspecifiedType().(ReferenceType).getBaseType() =
       getDeclaringType().getTemplateArgument(_).(Type).getUnspecifiedType() // i.e. the `T1` or `T2` of this `std::pair<T1, T2>`
   }
 
   override predicate hasTaintFlow(FunctionInput input, FunctionOutput output) {
-    // taint flow from any parameter of the value type to the returned object
+    // taint flow from any parameter of a value type to the qualifier
     input.isParameterDeref(getAValueTypeParameterIndex()) and
     (
       output.isReturnValue() // TODO: this is only needed for AST data flow, which treats constructors as returning the new object