imhentai fix thumbnails (#14578)

src/all/imhentai/build.gradle

@@ -5,7 +5,7 @@ ext {
     extName = 'IMHentai'
     pkgNameSuffix = 'all.imhentai'
     extClass = '.IMHentaiFactory'
-    extVersionCode = 8
+    extVersionCode = 9
     isNsfw = true
 }
 

src/all/imhentai/src/eu/kanade/tachiyomi/extension/all/imhentai/IMHentai.kt

@@ -54,7 +54,7 @@ class IMHentai(override val lang: String, private val imhLang: String) : ParsedH
 
     override fun popularMangaFromElement(element: Element): SManga {
         return SManga.create().apply {
-            thumbnail_url = element.select(".inner_thumb img").attr("src")
+            thumbnail_url = element.select(".inner_thumb img").attr("data-src")
             with(element.select(".caption a")) {
                 url = this.attr("href")
                 title = this.text()