add logical check before creating result: #4603

[tarunKoyalwar]

Proposed Changes

Note

• Issue mentioned in CVE-2019-6799 --show stupity  #4603 was caused due to a missing logical which was introduced after (fallthrough extracted values in order #4574) . The issue is that when something is extracted but no match was found then nuclei printed result (which should not be the case)
• But this is rare edgecase where (dynamic extractor , normal extractor and matchers) all 3 should exist with complex logic like https://cloud.projectdiscovery.io/public/CVE-2019-6799

• closes CVE-2019-6799 --show stupity  #4603