[Bug c++/87289] jdk11 plinux compiled with gcc 7.3 doesn't work with NativeImageBuffer

[pdbain at ca dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87289

--- Comment #6 from pdbain at ca dot ibm.com ---
Created attachment 44688
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44688&action=edit
Reworked code without goto across cases

This version works.