Merge pull request #57 from GApple-T/consulting

상담 신청할 때 모든 학생을 대상으로 시간을 검색하던 문제를 수정

src/main/java/com/gapple/weeingback/domain/consulting/service/implementation/ConsultingServiceImpl.java

@@ -43,9 +43,11 @@ public ResponseEntity<ConsultingSubmitResponse> submitConsulting(ConsultingSubmi
                 request.getTime(),
                 request.getDescription());
 
-        if(consultingRepository.existsByTime(consulting.getTime())){
-            throw new SameConsultingException();
-        }
+        member.getConsulting().forEach(c -> {
+            if(request.getTime() == c.getTime()){
+                throw new SameConsultingException();
+            }
+        });
 
         member.addConsulting(consulting);