Fix Bug: Make sure direct memory is freed properly

spring-cloud-gateway-server/src/main/java/org/springframework/cloud/gateway/filter/RemoveCachedBodyFilter.java

@@ -40,7 +40,8 @@ public class RemoveCachedBodyFilter implements GlobalFilter, Ordered {
 					if (log.isTraceEnabled()) {
 						log.trace("releasing cached body in exchange attribute");
 					}
-					dataBuffer.release();
+					// ensure proper release
+					while(!dataBuffer.release()) {}
 				}
 			}
 		});