IfElseRuntime incorrect behaviour

[Muirey03]

Describe the bug
FridaRuntimes used in IfElseRuntime do not work correctly. This breaks ASAN in the frida_libpng example fuzzer for example.

To Reproduce
Either simply run the frida_libpng example fuzzer and observe that ASAN is not working correctly, or:

1. Create a fuzzer with asan in the runtimes for FridaInstrumentationHelper
2. Verify that ASAN is enabled and working
3. Replace asan with IfElseRuntime::new(move || Ok(true), tuple_list!(asan), tuple_list!())
4. Observe that ASAN is no longer working

Expected behavior
IfElseRuntime::new(move || Ok(true), tuple_list!(asan), tuple_list!()) should behave identically to asan.