FFT: Add move ops which would otherwise be implicitly deleted

modules/juce_dsp/frequency/juce_FFT.cpp

@@ -950,7 +950,11 @@ FFT::FFT (int order)
 {
 }
 
-FFT::~FFT() {}
+FFT::FFT (FFT&&) noexcept = default;
+
+FFT& FFT::operator= (FFT&&) noexcept = default;
+
+FFT::~FFT() = default;
 
 void FFT::perform (const Complex<float>* input, Complex<float>* output, bool inverse) const noexcept
 {

modules/juce_dsp/frequency/juce_FFT.h

@@ -50,6 +50,12 @@ public:
     */
     FFT (int order);
 
+    /** Move constructor. */
+    FFT (FFT&&) noexcept;
+
+    /** Move assignment operator. */
+    FFT& operator= (FFT&&) noexcept;
+
     /** Destructor. */
     ~FFT();