Merge pull request #128 from TripComeTrue/feature/#9-set-up-tripRecor…

…d-comment

[fix] 로그인하지 않은 사용자도 여행 후기 댓글(TripRecordComment) 목록 조회 가능하도록 수정

src/main/java/com/haejwo/tripcometrue/domain/comment/triprecord/service/TripRecordCommentService.java

@@ -57,8 +57,11 @@ public void saveComment(
     }
 
     private Member getMember(PrincipalDetails principalDetails) {
-        return memberRepository.findById(principalDetails.getMember().getId())
-                .orElseThrow(UserNotFoundException::new);
+        if (principalDetails != null) {
+            return memberRepository.findById(principalDetails.getMember().getId())
+                    .orElseThrow(UserNotFoundException::new);
+        }
+        return null;
     }
 
     public void saveReplyComment(