TimedAttempt: fix rollover

Author: pennam

src/utility/time/TimedAttempt.cpp

@@ -54,7 +54,7 @@ unsigned long TimedAttempt::retry() {
 unsigned long TimedAttempt::reload() {
   unsigned long retryDelay = (1 << _retryCount) * _minDelay;
   _retryDelay = min(retryDelay, _maxDelay);
-  _nextRetryTick = millis() + _retryDelay;
+  _retryTick = millis();
   return _retryDelay;
 }
 
@@ -67,7 +67,7 @@ bool TimedAttempt::isRetry() {
 }
 
 bool TimedAttempt::isExpired() {
-  return millis() > _nextRetryTick;
+  return millis() - _retryTick > _retryDelay;
 }
 
 unsigned int TimedAttempt::getRetryCount() {

src/utility/time/TimedAttempt.h

@@ -34,7 +34,7 @@ class TimedAttempt {
 private:
   unsigned long _minDelay;
   unsigned long _maxDelay;
-  unsigned long _nextRetryTick;
+  unsigned long _retryTick;
   unsigned long _retryDelay;
   unsigned int _retryCount;
 };