Fix ftbfs on Fedora 34

error: ISO C++17 does not allow dynamic exception specifications

error: static assertion failed: comparison object must be invocable as const

Signed-off-by: François Andriot <francois.andriot@free.fr>
(cherry picked from commit 0e69dfe375)

src/sound/AudioFileManager.cpp

@@ -414,7 +414,7 @@ AudioFileManager::setAudioPath(const std::string &path)
 }
 
 void
-AudioFileManager::testAudioPath() throw (BadAudioPathException)
+AudioFileManager::testAudioPath()
 {
     TQFileInfo info(m_audioPath.c_str());
     if (!(info.exists() && info.isDir() && !info.isRelative() &&

src/sound/AudioFileManager.h

@@ -165,7 +165,7 @@ public:
 
     // Throw if the current audio path does not exist or is not writable
     //
-    void testAudioPath() throw(BadAudioPathException);
+    void testAudioPath();
 
     // Get a new audio filename at the audio record path
     //

src/sound/SoundDriver.h

@@ -98,7 +98,7 @@ public:
 
     struct NoteOffEventCmp
     {
-        bool operator()(NoteOffEvent *nO1, NoteOffEvent *nO2)
+        bool operator()(NoteOffEvent *nO1, NoteOffEvent *nO2) const
         {
             return nO1->getRealTime() < nO2->getRealTime();
         }