Get rid of redundant boxing

src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/HitomiLaParser.kt

@@ -632,14 +632,14 @@ internal class HitomiLaParser(context: MangaLoaderContext) : MangaParser(context
 
 	// / --->
 
-	private var scriptLastRetrieval: Long? = null
+	private var scriptLastRetrieval: Long = -1L
 	private val mutex = Mutex()
 	private var subdomainOffsetDefault = 0
 	private val subdomainOffsetMap = mutableMapOf<Int, Int>()
 	private var commonImageId = ""
 
 	private suspend fun refreshScript() = mutex.withLock {
-		if (scriptLastRetrieval == null || (scriptLastRetrieval!! + 60000) < System.currentTimeMillis()) {
+		if (scriptLastRetrieval == -1L || (scriptLastRetrieval + 60000) < System.currentTimeMillis()) {
 			val ggScript = webClient.httpGet("$ltnBaseUrl/gg.js?_=${System.currentTimeMillis()}").parseRaw()
 
 			subdomainOffsetDefault = Regex("var o = (\\d)").find(ggScript)!!.groupValues[1].toInt()

src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/WebtoonsParser.kt

@@ -213,6 +213,8 @@ internal abstract class WebtoonsParser(
 								state = null,
 								source = source,
 							),
+							date = 0L,
+							readCount = 0L,
 						)
 					}
 			}
@@ -331,9 +333,9 @@ internal abstract class WebtoonsParser(
 		}
 	}
 
-	private inner class MangaWebtoon(
+	private class MangaWebtoon(
-		val manga: Manga,
+		@JvmField val manga: Manga,
-		@JvmField val date: Long? = null,
+		@JvmField val date: Long,
-		@JvmField val readCount: Long? = null, // FIXME get rid of boxing
+		@JvmField val readCount: Long,
 	)
 }