C++: Accept test changes

Lambda invocations are apparently const. This was exposed by the fix in
the previous commit.

Author: jbj

cpp/ql/test/library-tests/defuse/isAddressOfAccess.expected

@@ -11,9 +11,9 @@
 | addressOf.cpp:38:20:38:20 | i | non-const address |
 | addressOf.cpp:40:15:40:15 | i | non-const address |
 | addressOf.cpp:42:19:42:22 | iref | non-const address |
-| addressOf.cpp:48:3:48:4 | f1 | non-const address |
+| addressOf.cpp:48:3:48:4 | f1 | const address |
 | addressOf.cpp:49:15:49:22 | captured | non-const address |
-| addressOf.cpp:50:3:50:4 | f2 | non-const address |
+| addressOf.cpp:50:3:50:4 | f2 | const address |
 | addressOf.cpp:51:10:51:17 | captured |  |
 | addressOf.cpp:56:16:56:16 | i |  |
 | addressOf.cpp:56:19:56:19 | i |  |