refactor: add early return to make code more readable

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: passed
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: Planeshifter

lib/node_modules/@stdlib/_tools/remark/plugins/remark-lint-html-section-structure/lib/main.js

@@ -355,15 +355,16 @@ function linter( tree, file, options, clbk ) {
 					errCode = 'missing-section-comment';
 					reportErr( file, node, msg, errCode );
 				}
-			} else {
-				// There's not enough nodes after the section closing tag...
-				debug( 'Not enough nodes after section end' );
-				msg = 'Missing section closing comment. Section closing tag should be followed by <!-- /.' + sectionStack[ sectionStack.length - 1 ].className + ' --> comment on a separate line.';
-				errCode = 'missing-section-comment';
-				reportErr( file, node, msg, errCode );
+
+				sectionStack.pop();
+				return;
 			}
 
-			// Fall-throughs above are intentional: regardless of errors, pop the section stack:
+			// There's not enough nodes after the section closing tag...
+			debug( 'Not enough nodes after section end' );
+			msg = 'Missing section closing comment. Section closing tag should be followed by <!-- /.' + sectionStack[ sectionStack.length - 1 ].className + ' --> comment on a separate line.';
+			errCode = 'missing-section-comment';
+			reportErr( file, node, msg, errCode );
 			sectionStack.pop();
 		}
 	}