PSQ_DAScale (Adapt): Return always a copy of the waves for PSQ_DS_FilterFrequencyCurrentData

Author: t-b

Packages/MIES/MIES_AnalysisFunctions_PatchSeq.ipf

@@ -2126,7 +2126,10 @@ static Function [WAVE apfreqFiltered, WAVE DAScalesFiltered, WAVE deletedIndizes
 	WAVE/Z indizes = FindNeighbourWithPredicate(apfreq, EqualValuesOrBothNaN)
 
 	if(!WaveExists(indizes))
-		return [apfreq, DAScales, $"", numPoints]
+		Duplicate/FREE apfreq, apreqFiltered
+		Duplicate/FREE DAScales, DAScalesFiltered
+
+		return [apreqFiltered, DAScalesFiltered, $"", numPoints]
 	endif
 
 	if(DimSize(indizes, ROWS) == (numPoints - 1))