File grepmail-buildfix.patch of Package grepmail

--- grepmail
+++ grepmail
@@ -35,6 +35,9 @@
 use FileHandle;
 use Carp;
 
+# prevent another used only once warning
+my $dummystar = $Mail::Mbox::MessageParser::OLDSTDERR;
+
 # Set to 1 to enable caching capability
 $USE_CACHING = 1;