update_gio_module_cache: Do not chown a non-existing file

Only change the ownership of ${libdir}/gio/modules/giomodule.cache if
it exists.

(From OE-Core rev: df2e1a8fbadffac0f1781a0d07e050356a007327)

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/postinst-intercepts/update_gio_module_cache

@@ -3,7 +3,7 @@
 set -e
 
 PSEUDO_UNLOAD=1 qemuwrapper -L $D -E LD_LIBRARY_PATH=$D${libdir}:$D${base_libdir} \
-        $D${libexecdir}/${binprefix}gio-querymodules $D${libdir}/gio/modules/
-
-chown root:root $D${libdir}/gio/modules/giomodule.cache
+	$D${libexecdir}/${binprefix}gio-querymodules $D${libdir}/gio/modules/
 
+[ ! -e $D${libdir}/gio/modules/giomodule.cache ] ||
+	chown root:root $D${libdir}/gio/modules/giomodule.cache