I'm using the File::Find module to find files that matches a certain type

Occasionally I get this in my STDERR log : "Use of uninitialized value $_ in pattern match (m//)" when using the code below 
     find( { wanted => \&get_files, preprocess => \&nodirs }, "$DIR" )
+;

     sub nodirs {
         grep !-d, @_;
     }

     sub get_files {

         my @array;
         push @array, $File::Find::name if ( (/^.*\.($TYPES)$/i) );
     }

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How can I check if $_ is initalized before matching the pattern?

In reply to Help with $File:Find by roperl

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