Resolve gcc compiler warnings in ARM environment

source/SoundStretch/WavFile.cpp

@@ -450,7 +450,7 @@ int WavInFile::read(float *buffer, int maxElems)
 int WavInFile::eof() const
 {
     // return true if all data has been read or file eof has reached
-    return (dataRead == header.data.data_len || feof(fptr));
+    return ((uint)dataRead == header.data.data_len || feof(fptr));
 }
 
 

source/SoundTouch/FIRFilter.cpp

@@ -283,6 +283,7 @@ void * FIRFilter::operator new(size_t)
 
 FIRFilter * FIRFilter::newInstance()
 {
+    __attribute__((unused))
     uint uExtensions;
 
     uExtensions = detectCPUextensions();

source/SoundTouch/TDStretch.cpp

@@ -750,6 +750,7 @@ void * TDStretch::operator new(size_t)
 
 TDStretch * TDStretch::newInstance()
 {
+    __attribute__((unused))
     uint uExtensions;
 
     uExtensions = detectCPUextensions();