Don't crash on dead code in ICodeReader
Tone down the noise in the output of t7974

This makes it pass under -Ybackend:GenBCode
Make test repl-javap-app independent of precise constant pool indices

Allows the test to pass on both backends
Test: classfile reading during inlining works if there is dead code
Merge pull request #3816 from lrytz/bcode/bugs

Don't crash on dead code in ICodeReader