fix: Remove unreachable else-if branch in PromptChatMemoryAdvisor (spring-projects#3395)

Fixes: spring-projects#3395

Auto-cherry-pick to 1.0.x

Signed-off-by: aliqingdong <[email protected]>
Co-authored-by: aliqingdong <[email protected]>
Signed-off-by: minsoo.nam <[email protected]>

Author: 2 people

spring-ai-client-chat/src/main/java/org/springframework/ai/chat/client/advisor/PromptChatMemoryAdvisor.java

@@ -141,18 +141,18 @@ public ChatClientRequest before(ChatClientRequest chatClientRequest, AdvisorChai
 	@Override
 	public ChatClientResponse after(ChatClientResponse chatClientResponse, AdvisorChain advisorChain) {
 		List<Message> assistantMessages = new ArrayList<>();
-		if (chatClientResponse.chatResponse() != null) {
+		// Handle streaming case where we have a single result
+		if (chatClientResponse.chatResponse() != null && chatClientResponse.chatResponse().getResult() != null
+				&& chatClientResponse.chatResponse().getResult().getOutput() != null) {
+			assistantMessages = List.of((Message) chatClientResponse.chatResponse().getResult().getOutput());
+		}
+		else if (chatClientResponse.chatResponse() != null) {
 			assistantMessages = chatClientResponse.chatResponse()
 				.getResults()
 				.stream()
 				.map(g -> (Message) g.getOutput())
 				.toList();
 		}
-		// Handle streaming case where we have a single result
-		else if (chatClientResponse.chatResponse() != null && chatClientResponse.chatResponse().getResult() != null
-				&& chatClientResponse.chatResponse().getResult().getOutput() != null) {
-			assistantMessages = List.of((Message) chatClientResponse.chatResponse().getResult().getOutput());
-		}
 
 		if (!assistantMessages.isEmpty()) {
 			this.chatMemory.add(this.getConversationId(chatClientResponse.context(), this.defaultConversationId),