get_cpuConsumptionWatts trys upto 5 times to update usage correctly

Author: vandabbin

src/linux/btop_collect.cpp

@@ -994,6 +994,12 @@ namespace Cpu {
 		auto current_timestamp = get_monotonicTimeUSec();
 		auto current_usage = get_cpuConsumptionUJoules();
 
+		int i = 0;
+		while (current_usage < previous_usage and ++i <= 4) {
+			current_timestamp = get_monotonicTimeUSec();
+			current_usage = get_cpuConsumptionUJoules();
+		}
+
 		auto watts = (float)(current_usage - previous_usage) / (float)(current_timestamp - previous_timestamp);
 
 		previous_timestamp = current_timestamp;