Enable warnings

t/01_testssl_banner.t

@@ -4,6 +4,7 @@
 # --banner is equal to --version
 
 use strict;
+use warnings;
 use Test::More;
 
 my $tests = 0;

t/05_ca_hashes_up_to_date.t

@@ -1,6 +1,7 @@
 #!/usr/bin/env perl
 
 use strict;
+use warnings;
 use Test::More;
 
 printf "\n%s\n", "Make sure CA certificate stores are older than their SPKI hashes \"~/etc/ca_hashes.txt\" ...";