GCC 12 reports use-after-free potential bugs in below:

```
In function 'find_positions',
    inlined from 'find_file' at /home/ysuenaga/github-forked/jdk/src/java.base/share/native/libjli/parse_manifest.c:364:9:
/home/ysuenaga/github-forked/jdk/src/java.base/share/native/libjli/parse_manifest.c:292:34: warning: pointer 'endpos' used after 'free' [-Wuse-after-free]
  292 | pos = flen - (endpos - cp);
      | ~~~~~~~~^~~~~
/home/ysuenaga/github-forked/jdk/src/java.base/share/native/libjli/parse_manifest.c:291:13: note: call to 'free' here
  291 | free(buffer);
      | ^~~~~~~~~~~~
Updating jdk/modules/jdk.jpackage/jdk/jpackage/internal/resources/jpackageapplauncher due to 1 file(s)
/home/ysuenaga/github-forked/jdk/src/jdk.jpackage/linux/native/applauncher/LinuxPackage.c: In function 'popenCommand':
/home/ysuenaga/github-forked/jdk/src/jdk.jpackage/linux/native/applauncher/LinuxPackage.c:180:63: warning: pointer 'strBufBegin' may be used after 'realloc' [-Wuse-after-free]
  180 | strBufNextChar = strNewBufBegin + (strBufNextChar - strBufBegin);
      | ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
/home/ysuenaga/github-forked/jdk/src/jdk.jpackage/linux/native/applauncher/LinuxPackage.c:174:30: note: call to 'realloc' here
  174 | strNewBufBegin = realloc(strBufBegin, strBufCapacity);
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```