[cors] Use compiler instead of never reached exception

javalin/src/main/java/io/javalin/plugin/bundled/CorsPlugin.kt

@@ -55,16 +55,10 @@ class CorsPluginConfig {
                 require(it != "null") { "Adding the string null as an allowed host is forbidden. Consider calling anyHost() instead" }
                 require(isValidOrigin(it)) { "The given value '${origins[idx]}' could not be transformed into a valid origin" }
                 val wildcardResult = originFulfillsWildcardRequirements(it)
-                require(wildcardResult !is WildcardResult.ErrorState) {
-                    when (wildcardResult) {
-                        WildcardResult.ErrorState.TooManyWildcards -> "Too many wildcards detected inside '${origins[idx]}'. Only one at the start of the host is allowed!"
-                        WildcardResult.ErrorState.WildcardNotAtTheStartOfTheHost -> "The wildcard must be at the start of the passed in host. The value '${origins[idx]}' violates this requirement!"
-                        else -> throw IllegalStateException(
-                            """This code path should never be hit.
-                        |
-                        |Please report it to the maintainers of Javalin as a GitHub issue at https://github.com/javalin/javalin/issues/new/choose""".trimMargin()
-                        )
-                    }
+                when (wildcardResult) {
+                    WildcardResult.WildcardOkay, WildcardResult.NoWildcardDetected -> Unit
+                    WildcardResult.ErrorState.TooManyWildcards -> throw IllegalArgumentException("Too many wildcards detected inside '${origins[idx]}'. Only one at the start of the host is allowed!")
+                    WildcardResult.ErrorState.WildcardNotAtTheStartOfTheHost -> throw IllegalArgumentException("The wildcard must be at the start of the passed in host. The value '${origins[idx]}' violates this requirement!")
                 }
                 allowedOrigins.add(it)
             }