message: Update split-message-based-on-limit.cpp
diff: @@ -6,7 +6,10 @@ class Solution {
  public:
  vector<string> splitMessage(string message, int limit) {
  int cnt = 1, l = 1;
  - for (int total = size(message) + 1, base = 1; 3 + l * 2 < limit && total + (3 + l) * cnt > limit * cnt;) {
  + for (int total = size(message) + 1, base = 1; 3 + l * 2 < limit;) {
  + if (total + (3 + l) * cnt <= limit * cnt) {
  + break;
  + }
  ++cnt;
  if (cnt == 10 * base) {
  ++l;
  