ReaderFront: Remove unsupported function usage (#12497)

multisrc/src/main/java/eu/kanade/tachiyomi/multisrc/readerfront/ReaderFrontGenerator.kt

@@ -9,7 +9,7 @@ class ReaderFrontGenerator : ThemeSourceGenerator {
 
     override val themeClass = "ReaderFront"
 
-    override val baseVersionCode = 5
+    override val baseVersionCode = 6
 
     override val sources = listOf(
         MultiLang("Ravens Scans", "https://ravens-scans.com", listOf("es", "en"), true),

multisrc/src/main/java/eu/kanade/tachiyomi/multisrc/readerfront/ReaderFrontI18N.kt

@@ -4,7 +4,7 @@ sealed class ReaderFrontI18N(val id: Int) {
     protected abstract val genres: Map<String, String>
 
     operator fun get(name: NameWrapper) =
-        name.toString().let { genres.getOrDefault(it, it) }
+        name.toString().let { genres[it] ?: it }
 
     object SPANISH : ReaderFrontI18N(1) {
         override val genres = mapOf(