Bug 826678: Disable warnings about the deprecated Return::Value module when loading Email::Send

Bugzilla/Config/MTA.pm

@@ -11,6 +11,12 @@ use 5.10.1;
 use strict;
 
 use Bugzilla::Config::Common;
+# Return::Value 1.666002 pollutes the error log with warnings about this
+# deprecated module. We have to set NO_CLUCK = 1 before loading Email::Send
+# to disable these warnings.
+BEGIN {
+    $Return::Value::NO_CLUCK = 1;
+}
 use Email::Send;
 
 our $sortkey = 1200;

Bugzilla/Install/Requirements.pm

@@ -23,6 +23,13 @@ use List::Util qw(max);
 use Safe;
 use Term::ANSIColor;
 
+# Return::Value 1.666002 pollutes the error log with warnings about this
+# deprecated module. We have to set NO_CLUCK = 1 before loading Email::Send
+# in have_vers() to disable these warnings.
+BEGIN {
+    $Return::Value::NO_CLUCK = 1;
+}
+
 use parent qw(Exporter);
 our @EXPORT = qw(
     REQUIRED_MODULES

Bugzilla/Mailer.pm

@@ -24,6 +24,12 @@ use Encode qw(encode);
 use Encode::MIME::Header;
 use Email::Address;
 use Email::MIME;
+# Return::Value 1.666002 pollutes the error log with warnings about this
+# deprecated module. We have to set NO_CLUCK = 1 before loading Email::Send
+# to disable these warnings.
+BEGIN {
+    $Return::Value::NO_CLUCK = 1;
+}
 use Email::Send;
 
 sub MessageToMTA {