Fix CompileTimeConstant ErrorProne issue

Fixed CompileTimeConstant error [1] raised by Flogger:
"[FloggerLogString] Arguments to log(String) must be compile-time
constants or parameters annotated with @CompileTimeConstant. If possible,
use Flogger's formatting log methods instead"

[1]: https://errorprone.info/bugpattern/CompileTimeConstant

Bug: Issue 16650

Change-Id: Id0753978860fa2821527731856a96b200c5adf06

src/main/java/com/googlesource/gerrit/plugins/validation/dfsrefdb/zookeeper/ZkSharedRefDatabase.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/validation/dfsrefdb/zookeeper/ZkSharedRefDatabase.java b/src/main/java/com/googlesource/gerrit/plugins/validation/dfsrefdb/zookeeper/ZkSharedRefDatabase.java
index 3fc54a3..c3cf002 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/validation/dfsrefdb/zookeeper/ZkSharedRefDatabase.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/validation/dfsrefdb/zookeeper/ZkSharedRefDatabase.java
@@ -165,10 +165,8 @@
 
       return newDistributedValue.succeeded();
     } catch (Exception e) {
-      String message =
-          String.format(
-              "Error trying to perform CAS of generic value at path %s", pathFor(project, refName));
-      logger.atWarning().withCause(e).log(message);
+      logger.atWarning().withCause(e).log(
+          "Error trying to perform CAS of generic value at path %s", pathFor(project, refName));
       throw new GlobalRefDbSystemError(message, e);
     }
   }