sonar Bugfix (ein Codesmell war ein Bug)
diff --git a/gfsBackendService/src/main/java/org/eclipse/openk/gridfailureinformation/service/DistributionGroupMemberService.java b/gfsBackendService/src/main/java/org/eclipse/openk/gridfailureinformation/service/DistributionGroupMemberService.java
index 524817f..7697424 100644
--- a/gfsBackendService/src/main/java/org/eclipse/openk/gridfailureinformation/service/DistributionGroupMemberService.java
+++ b/gfsBackendService/src/main/java/org/eclipse/openk/gridfailureinformation/service/DistributionGroupMemberService.java
@@ -111,8 +111,8 @@
 
     @Transactional
     public void deleteDistributionGroupMember(UUID groupUuid, UUID memberUuid) {
-        distributionGroupRepository.findByUuid(groupUuid)
-                .orElseThrow( () -> new BadRequestException("distribution.group.uuid.not.existing"));
+        TblDistributionGroup existingDistributionGroup = distributionGroupRepository.findByUuid(groupUuid)
+                .orElseThrow( () -> new BadRequestException("distribution.group.uuid.not.existing"));;
 
         TblDistributionGroupMember existingMember = distributionGroupMemberRepository.findByUuid(memberUuid)
                 .orElseThrow( () -> new BadRequestException("distribution.group.member.uuid.not.existing"));