[PATCH] remove "no warnings 'once'" in a few places

[PATCH] remove "no warnings 'once'" in a few places

[Eric Wong]

We can use "use" to get the namespace into the "BEGIN" phase of
the interpreter.  While we're at it, use \&coderef syntax
explicitly instead of globbing everything.
---
 lib/PublicInbox/Spawn.pm      | 3 +--
 lib/PublicInbox/WwwListing.pm | 3 ++-
 script/public-inbox-purge     | 6 +++---
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/lib/PublicInbox/Spawn.pm b/lib/PublicInbox/Spawn.pm
index 6493ad38..c64812dd 100644
--- a/lib/PublicInbox/Spawn.pm
+++ b/lib/PublicInbox/Spawn.pm
@@ -172,8 +172,7 @@ if (defined $vfork_spawn) {
 
 unless (defined $vfork_spawn) {
 	require PublicInbox::SpawnPP;
-	no warnings 'once';
-	*pi_fork_exec = *PublicInbox::SpawnPP::pi_fork_exec
+	*pi_fork_exec = \&PublicInbox::SpawnPP::pi_fork_exec
 }
 
 sub which ($) {
diff --git a/lib/PublicInbox/WwwListing.pm b/lib/PublicInbox/WwwListing.pm
index 03534f03..bcb968af 100644
--- a/lib/PublicInbox/WwwListing.pm
+++ b/lib/PublicInbox/WwwListing.pm
@@ -9,11 +9,12 @@ use warnings;
 use PublicInbox::Hval qw(ascii_html);
 use PublicInbox::Linkify;
 use PublicInbox::View;
+use PublicInbox::Inbox;
 use bytes ();
 use HTTP::Date qw(time2str);
 require Digest::SHA;
 require File::Spec;
-{ no warnings 'once'; *try_cat = *PublicInbox::Inbox::try_cat };
+*try_cat = \&PublicInbox::Inbox::try_cat;
 
 sub list_all ($$$) {
 	my ($self, $env, $hide_key) = @_;
diff --git a/script/public-inbox-purge b/script/public-inbox-purge
index 0705d170..f103ccf7 100755
--- a/script/public-inbox-purge
+++ b/script/public-inbox-purge
@@ -9,11 +9,11 @@ use warnings;
 use Getopt::Long qw(:config gnu_getopt no_ignore_case auto_abbrev);
 use PublicInbox::AdminEdit;
 PublicInbox::Admin::check_require('-index');
-require PublicInbox::Filter::Base;
-require PublicInbox::MIME;
+use PublicInbox::Filter::Base;
+use PublicInbox::MIME;
 require PublicInbox::V2Writable;
 
-{ no warnings 'once'; *REJECT = *PublicInbox::Filter::Base::REJECT }
+*REJECT = \&PublicInbox::Filter::Base::REJECT;
 
 my $usage = "$0 [--all] [INBOX_DIRS] </path/to/message";
 my $opt = { verbose => 1, all => 0, -min_inbox_version => 2 };