Cadence not reset/cleared during multiple training sessions

[gcoco]

When I use the trainer function the cadence value from the last session(s) are not reset/cleared.

GC v3.4 Offical release on Windows 10 64bit.

[liversedge]

should have been fixed a while ago.

[amtriathlon]

It’s a trivial error still present, I will fix it:

cadData->clear();

Missing before:

GoldenCheetah/src/Train/ErgFilePlot.cpp

Line 549 in a0ed8d0

cadCurve->setSamples(cadData->x(), cadData->y(), cadData->count());