Replace QVector for hint list with QVarLengthArray.

Reasons:
* QVector::clear() does not save the reserve()'d memory. We were
  growing the vector on every callback -- taking about 1% of the
  callback to do so.
* No implicit data sharing (no risk of detach()'s in the future).

1 files changed, 2 insertions, 2 deletions

diff --git a/src/engine/readaheadmanager.h b/src/engine/readaheadmanager.h
index fc254393db..6425419ab9 100644
--- a/src/engine/readaheadmanager.h
+++ b/src/engine/readaheadmanager.h
@@ -11,8 +11,8 @@
 
 #include "util/types.h"
 #include "util/math.h"
+#include "cachingreader.h"
 
-struct Hint;
 class EngineControl;
 class CachingReader;
 
@@ -54,7 +54,7 @@ class ReadAheadManager {
 
     // hintReader allows the ReadAheadManager to provide hints to the reader to
     // indicate that the given portion of a song is about to be read.
-    virtual void hintReader(double dRate, QVector<Hint>* hintList);
+    virtual void hintReader(double dRate, HintVector* hintList);
 
     virtual int getEffectiveVirtualPlaypositionFromLog(double currentVirtualPlayposition,
                                                        double numConsumedSamples);