trim once

Author: parthchandra

common/src/main/java/org/apache/comet/exceptions/CometQueryExecutionException.java

@@ -57,6 +57,8 @@ public CometQueryExecutionException(String jsonMessage) {
    */
   public boolean isJsonMessage() {
     String msg = getMessage();
-    return msg != null && msg.trim().startsWith("{") && msg.trim().endsWith("}");
+    if (msg == null) return false;
+    String trimmed = msg.trim();
+    return trimmed.startsWith("{") && trimmed.endsWith("}");
   }
 }