seccomp: Forge return values for *chown32

These syscalls are only available in 32bit architectures, but libseccomp
should handle them correctly even if we're on native architectures that
do not have these syscalls.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>

src/libstore/build.cc

@@ -1654,6 +1654,10 @@ void setupSeccomp(void) {
     }
 #endif
 
+    FORCE_SUCCESS(chown32);
+    FORCE_SUCCESS(fchown32);
+    FORCE_SUCCESS(lchown32);
+
     FORCE_SUCCESS(chown);
     FORCE_SUCCESS(fchown);
     FORCE_SUCCESS(fchownat);