more use of size_t

src/Envelope.cpp

@@ -868,7 +868,7 @@ int Envelope::Move(double when, double value)
 }
 
 
-int Envelope::GetNumberOfPoints() const
+size_t Envelope::GetNumberOfPoints() const
 {
    return mEnv.size();
 }

src/Envelope.h

@@ -179,7 +179,7 @@ class Envelope final : public XMLTagHandler {
    void Insert(int point, const EnvPoint &p);
 
    /** \brief Return number of points */
-   int GetNumberOfPoints() const;
+   size_t GetNumberOfPoints() const;
 
    /** \brief Accessor for points */
    const EnvPoint &operator[] (int index) const

src/blockfile/LegacyBlockFile.cpp

@@ -37,7 +37,7 @@
 #include "sndfile.h"
 
 void ComputeLegacySummaryInfo(const wxFileName &fileName,
-                              int summaryLen,
+                              size_t summaryLen,
                               sampleFormat format,
                               SummaryInfo *info,
                               bool noRMS,bool Silent,

src/blockfile/LegacyBlockFile.h

@@ -17,7 +17,7 @@
 #include "../BlockFile.h"
 
 void ComputeLegacySummaryInfo(const wxFileName &fileName,
-                              int summaryLen,
+                              size_t summaryLen,
                               sampleFormat format,
                               SummaryInfo *info,
                               bool noRMS,bool Silent,