Fixes per Vigilant Sentry (http://www.vigilantsw.com/)

* Fix memory leaks.

* Add comments about initializations and checking for successful results.

* Add checks for NULL deref.

* Consistency in "TODO" vs "TO-DO" comments!

src/effects/vamp/VampEffect.cpp

@@ -221,7 +221,7 @@ bool VampEffect::Process()
 
       mTracks->Add(ltrack);
 
-      float **data = new float*[channels];
+      float **data = new float*[channels]; // ANSWER-ME: Vigilant Sentry marks this as memory leak, var "data" not deleted.
       for (int c = 0; c < channels; ++c) data[c] = new float[block];
 
       sampleCount originalLen = len;