[TESTBUG] Incompatible types conversion error in vmTestbase/vm/runtime/defmeth/StressTest.java after JDK-8243432

* Reproduce
```
Ben="vmTestbase/vm/runtime/defmeth/scenarios/Stress_noredefine/TestDescription.java vmTestbase/vm/runtime/defmeth/scenarios/Stress_redefine/TestDescription.java"
make test TEST="${Ben}" CONF=server-release
```

* Symptom
```
jdk/test/hotspot/jtreg/vmTestbase/vm/runtime/defmeth/StressTest.java:219: error: incompatible types: possible lossy conversion from long to int
            seed = Utils.SEED;
                        ^
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error

TEST RESULT: Failed. Compilation failed: Compilation failed
--------------------------------------------------
Test results: failed: 1
```