DelayLine: Fix early wrapping in Lagrange interpolation

Co-authored-by: LeonPS <leonps531@gmail.com>

modules/juce_dsp/processors/juce_DelayLine.cpp

@@ -86,7 +86,7 @@ template <typename SampleType, typename InterpolationType>
 void DelayLine<SampleType, InterpolationType>::setMaximumDelayInSamples (int maxDelayInSamples)
 {
     jassert (maxDelayInSamples >= 0);
-    totalSize = jmax (4, maxDelayInSamples + 1);
+    totalSize = jmax (4, maxDelayInSamples + 2);
     bufferData.setSize ((int) bufferData.getNumChannels(), totalSize, false, false, true);
     reset();
 }

modules/juce_dsp/processors/juce_DelayLine.h

@@ -125,7 +125,7 @@ public:
         For very short delay times, the result of getMaximumDelayInSamples() may
         differ from the last value passed to setMaximumDelayInSamples().
     */
-    int getMaximumDelayInSamples() const noexcept       { return totalSize - 1; }
+    int getMaximumDelayInSamples() const noexcept       { return totalSize - 2; }
 
     /** Resets the internal state variables of the processor. */
     void reset();