Do not early return from HTTP::Server::Response::Output.close. Revert what Ameba broke

.ameba.yml

@@ -1,18 +1,8 @@
 # This configuration file was generated by `ameba --gen-config`
-# on 2019-06-13 12:39:59 UTC using Ameba version 0.10.0.
+# on 2019-06-14 15:05:57 UTC using Ameba version 0.10.0.
 # The point is for the user to remove these configuration records
 # one by one as the reported problems are removed from the code base.
 
-# Problems found: 1
-# Run `ameba --only Lint/ShadowingOuterLocalVar` for details
-Lint/ShadowingOuterLocalVar:
-  Description: Disallows the usage of the same name as outer local variables for block
-    or proc arguments.
-  Enabled: true
-  Severity: Warning
-  Excluded:
-  - spec/run_spec.cr
-
 # Problems found: 7
 # Run `ameba --only Lint/UselessAssign` for details
 Lint/UselessAssign:
@@ -22,6 +12,25 @@ Lint/UselessAssign:
   Excluded:
   - spec/view_spec.cr
 
+# Problems found: 1
+# Run `ameba --only Lint/ShadowingOuterLocalVar` for details
+Lint/ShadowingOuterLocalVar:
+  Description: Disallows the usage of the same name as outer local variables for block
+    or proc arguments.
+  Enabled: true
+  Severity: Warning
+  Excluded:
+  - spec/run_spec.cr
+
+# Problems found: 1
+# Run `ameba --only Style/NegatedConditionsInUnless` for details
+Style/NegatedConditionsInUnless:
+  Description: Disallows negated conditions in unless
+  Enabled: true
+  Severity: Convention
+  Excluded:
+  - src/kemal/ext/response.cr
+
 # Problems found: 1
 # Run `ameba --only Metrics/CyclomaticComplexity` for details
 Metrics/CyclomaticComplexity:

src/kemal/ext/response.cr

@@ -1,7 +1,7 @@
 class HTTP::Server::Response
   class Output
     def close
-      if !response.wrote_headers? && response.headers.has_key?("Content-Range")
+      unless response.wrote_headers? && !response.headers.has_key?("Content-Range")
         response.content_length = @out_count
       end