Dpkg::Vendor::Debian: Do not disable PIE buildflags on */kFreeBSD anymore

The flag should work on all current */kFreeBSD systems now.

Closes: #823877
Signed-off-by: Guillem Jover <guillem@debian.org>

debian/changelog

@@ -1,6 +1,8 @@
 dpkg (1.18.8) UNRELEASED; urgency=medium
 
   [ Guillem Jover ]
+  * Do not disable PIE buildflags on */kFreeBSD anymore. Closes: #823877
+    Thanks to Steven Chamberlain <steven@pyro.eu.org>.
   * Perl modules:
     - Use warnings::warnif() instead of carp() for deprecated warnings.
   * Test suite:

scripts/Dpkg/Vendor/Debian.pm

@@ -269,9 +269,9 @@ sub _add_hardening_flags {
     $self->_parse_feature_area('hardening', \%use_feature);
 
     # Mask features that are not available on certain architectures.
-    if ($os !~ /^(?:linux|knetbsd|hurd)$/ or
+    if ($os !~ /^(?:linux|kfreebsd|knetbsd|hurd)$/ or
 	$cpu =~ /^(?:hppa|avr32)$/) {
-	# Disabled on non-linux/knetbsd/hurd (see #430455 and #586215).
+	# Disabled on non-(linux/kfreebsd/knetbsd/hurd).
 	# Disabled on hppa, avr32
 	#  (#574716).
 	$use_feature{pie} = 0;