Zero: crash with NULL MethodHandle receiver

Happens reliably:

$ CONF=linux-x86_64-zero-fastdebug make exploded-test TEST=compiler/jsr292/NullConstantReceiver.java

#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x0000000000000000, pid=4059994, tid=4060008