build-system: make "make distcheck" work

It failed with:
```
make[5]: Entering directory '/home/travis/build/karelzak/util-linux/util-linux-2.36.32-0fea/_build/sub/po'
make[5]: *** No rule to make target '../../../include/fuzz.h', needed by 'util-linux.pot-update'.  Stop.
make[5]: Leaving directory '/home/travis/build/karelzak/util-linux/util-linux-2.36.32-0fea/_build/sub/po'
Makefile:896: recipe for target 'update-po' failed
make[4]: *** [update-po] Error 2
```

Signed-off-by: Evgeny Vereshchagin <evvers@ya.ru>

diff --git a/include/Makemodule.am b/include/Makemodule.am
index 3f8b6233f4e6aca0d6dda75691e2914692869713..7ffbf3958a69e63ebb2bb910542e828041b2b1fc 100644 (file)
--- a/include/Makemodule.am
+++ b/include/Makemodule.am
@@ -21,6 +21,7 @@ dist_noinst_HEADERS += \
        include/exec_shell.h \
        include/exitcodes.h \
        include/fileutils.h \
+       include/fuzz.h \
        include/idcache.h \
        include/ismounted.h \
        include/iso9660.h \