Handle IllegalReferenceCountException for decoder, while uploading ISO from local (apache#10879)

Author: sureshanaparti

services/secondary-storage/server/src/main/java/org/apache/cloudstack/storage/resource/HttpUploadServerHandler.java

@@ -27,6 +27,7 @@
 import java.util.Map;
 import java.util.Map.Entry;
 
+import io.netty.util.IllegalReferenceCountException;
 import org.apache.cloudstack.storage.template.UploadEntity;
 import org.apache.cloudstack.utils.imagestore.ImageStoreUtil;
 import org.apache.commons.lang3.StringUtils;
@@ -229,8 +230,15 @@ public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Excep
     private void reset() {
         request = null;
         // destroy the decoder to release all resources
-        decoder.destroy();
-        decoder = null;
+        if (decoder != null) {
+            try {
+                decoder.destroy();
+            } catch (IllegalReferenceCountException e) {
+                logger.warn("Decoder already destroyed", e);
+            }
+
+            decoder = null;
+        }
     }
 
     private HttpResponseStatus readFileUploadData() throws IOException {