Fix #5862: 修复 CurseForge Addon Logo 中不包含 thumbnailUrl 时无法加载图标的问题 (#5971)

Author: Glavo

HMCLCore/src/main/java/org/jackhuang/hmcl/mod/curse/CurseAddon.java

@@ -24,6 +24,7 @@
 import org.jackhuang.hmcl.util.Immutable;
 import org.jackhuang.hmcl.util.Lang;
 import org.jackhuang.hmcl.util.Pair;
+import org.jackhuang.hmcl.util.StringUtils;
 import org.jetbrains.annotations.Nullable;
 
 import java.io.IOException;
@@ -211,7 +212,13 @@ public Stream<RemoteMod.Version> loadVersions(RemoteModRepository modRepository,
     }
 
     public RemoteMod toMod() {
-        String iconUrl = Optional.ofNullable(logo).map(Logo::getThumbnailUrl).orElse("");
+        String iconUrl = "";
+        if (logo != null) {
+            if (StringUtils.isNotBlank(logo.getThumbnailUrl()))
+                iconUrl = logo.getThumbnailUrl();
+            else if (StringUtils.isNotBlank(logo.getUrl()))
+                iconUrl = logo.getUrl();
+        }
 
         return new RemoteMod(
                 slug,