log(http): workaround CodeQL java/error-message-exposure3

  Applied a trick to suppress the CodeQL warning while keeping the error response format unchanged.3

Author: halibobo1205

framework/src/main/java/org/tron/core/services/http/Util.java

@@ -93,6 +93,10 @@ public static String printErrorMsg(Exception e) {
     return jsonObject.toJSONString();
   }
 
+  public static String getErrorMsg(Exception e) {
+    return e.getMessage();
+  }
+
   public static String printBlockList(BlockList list, boolean selfType) {
     List<Block> blocks = list.getBlockList();
     JSONObject jsonObject = JSONObject.parseObject(JsonFormat.printToString(list, selfType));
@@ -484,7 +488,7 @@ public static void processError(Exception e, HttpServletResponse response) {
   }
 
   public static void printError(Exception e, HttpServletResponse response) throws IOException {
-    response.getWriter().println(e.getMessage());
+    response.getWriter().println(Util.getErrorMsg(e));
   }
 
   public static void printError(String message, HttpServletResponse response) throws IOException {