comparison audio/AudioGenerator.cpp @ 598:7da68349a0c5

Fix compiler warning

 {
     if (m_sampleDir != "") return;
 
     try {
         m_sampleDir = TempDirectory::getInstance()->getSubDirectoryPath("samples");
-    } catch (DirectoryCreationFailed f) {
+    } catch (const DirectoryCreationFailed &f) {
         cerr << "WARNING: AudioGenerator::initialiseSampleDir:"
                   << " Failed to create temporary sample directory"
                   << endl;
         m_sampleDir = "";
         return;