Merge branch '5.3.x'

spring-webflux/src/main/java/org/springframework/web/reactive/function/client/DefaultClientResponse.java

@@ -195,13 +195,7 @@ class DefaultClientResponse implements ClientResponse {
 
 	@Override
 	public Mono<WebClientResponseException> createException() {
-		return DataBufferUtils.join(body(BodyExtractors.toDataBuffers()))
-				.map(dataBuffer -> {
-					byte[] bytes = new byte[dataBuffer.readableByteCount()];
-					dataBuffer.read(bytes);
-					DataBufferUtils.release(dataBuffer);
-					return bytes;
-				})
+		return bodyToMono(byte[].class)
 				.defaultIfEmpty(EMPTY)
 				.onErrorReturn(ex -> !(ex instanceof Error), EMPTY)
 				.map(bodyBytes -> {