sns: factor allowed values are 0...100

code/espurna/sensors/CSE7766Sensor.h

@@ -240,6 +240,9 @@ class CSE7766Sensor : public BaseEmonSensor {
             _factor = ((_voltage > 0) && (_current > 0))
                 ? (100 * _active / _voltage / _current)
                 : 100;
+            if (_factor > 100) {
+                _factor = 100;
+            }
 
             if (_apparent > _active) {
                 _reactive = fs_sqrt(_apparent * _apparent - _active * _active);

code/espurna/sensors/V9261FSensor.h

@@ -305,6 +305,9 @@ class V9261FSensor : public BaseEmonSensor {
             _factor = ((_voltage > 0) && (_current > 0))
                 ? (100 * _active / _voltage / _current)
                 : 100;
+            if (_factor > 100) {
+                _factor = 100;
+            }
 
             if (_apparent > _active) {
                 _reactive = fs_sqrt(_apparent * _apparent - _active * _active);