Move return so that switch has default case

Eero Aaltonen · Eero Aaltonen · commit 729cbe7a7afe · 2022-05-27T19:32:44.000+03:00
When a project using docopt.cpp is built with `-Werror=switch-default`
option, there's an error
```
error: switch missing default case [-Werror=switch-default]
```
which this fixes.

Signed-off-by: Eero Aaltonen &lt;eero.aaltonen@vaisala.com&gt;
diff --git a/docopt_value.h b/docopt_value.h
@@ -85,8 +85,8 @@ namespace docopt {
 				case Kind::Long: return "long";
 				case Kind::String: return "string";
 				case Kind::StringList: return "string-list";
+				default: return "unknown";
 			}
-			return "unknown";
 		}
 
 		void throwIfNotKind(Kind expected) const {

Original file line number	Diff line number	Diff line change
`@@ -85,8 +85,8 @@ namespace docopt {`
`85`	`85`	`case Kind::Long: return "long";`
`86`	`86`	`case Kind::String: return "string";`
`87`	`87`	`case Kind::StringList: return "string-list";`
	`88`	`+ default: return "unknown";`
`88`	`89`	`}`
`89`		`- return "unknown";`
`90`	`90`	`}`
`91`	`91`
`92`	`92`	`void throwIfNotKind(Kind expected) const {`