Bug#960769: swt4-gtk FTBFS on 32bit

[Adrian Bunk]

Source: swt4-gtk
Version: 4.15.0-1
Severity: serious
Tags: ftbfs

https://buildd.debian.org/status/package.php?p=swt4-gtk&suite=sid

...
callback.c:697:2: error: initializer element is not constant
  697 |  (jlong)FN(0, args), \
      |  ^
...