remove extraneous whitespace

Author: mikemagowan

lib/Mojo/File.pm

@@ -63,7 +63,7 @@ sub list_tree {
 
   # The File::Find documentation lies, this is needed for CIFS
   local $File::Find::dont_use_nlink = 1 if $options->{dont_use_nlink};
-  
+
   my $path = $^O eq 'MSWin32' ? $$self =~ s!\\!/!gr : $$self;
   my %all;
   my $wanted = sub {