💚 make PMD happy

Author: FabianWilms

personalization-service/src/main/java/de/muenchen/dbs/personalization/checklist/ChecklistService.java

@@ -79,12 +79,9 @@ private Checklist getChecklistOrThrowException(final UUID checklistId) {
     private String getUserMailFromAuthenticationOrThrow() {
         final Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
         if (authentication.getPrincipal() instanceof Jwt jwt) {
-            Object emailClaim = jwt.getClaims().get("email");
-            if (emailClaim != null) {
-                final String email = emailClaim.toString();
-                if (!StringUtils.isBlank(email)) {
-                    return email;
-                }
+            final Object emailClaim = jwt.getClaims().get("email");
+            if (emailClaim != null && !StringUtils.isBlank(emailClaim.toString())) {
+                return emailClaim.toString();
             }
         }
         throw new ResponseStatusException(HttpStatus.UNAUTHORIZED);