Print contents of SVs using the SVf format

[SmartCodeMaker]

Description

If %s is used for SVs, then a garbage is printed.

References:
Formatted Printing of SVs (https://perldoc.perl.org/perlguts)

Fixes/addresses (If applicable) # (issue)

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• Changes have been manually tested (please provide information on test platform using the fields below)

Test / Development Platform Information

• Operating system and version: Ubuntu 16.04 x86_64
• Crypt::OpenSSL::PKCS12 version 1.7
• Perl version version 22, subversion 1 (v5.22.1) built for x86_64-linux-gnu-thread-multi
• OpenSSL version 1.0.2g-1ubuntu4.19

Please see the issue template for a more information on provided the requested information.