What is this? It isn't in the header file and no linker errors result from not including it.

stepmania/src/arch/MemoryCard/MemoryCardDriver.cpp

@@ -9,7 +9,7 @@ bool UsbStorageDevice::operator==(const UsbStorageDevice& other) const
   //  LOG->Trace( "Comparing %d %d %d %s %s to %d %d %d %s %s",
   //	      iBus, iPort, iLevel, sName.c_str(), sOsMountDir.c_str(),
   //	      other.iBus, other.iPort, other.iLevel, other.sName.c_str(), other.sOsMountDir.c_str() );
-#define COMPARE(x) if( x != other.x ) return false;
+#define COMPARE(x) if( x != other.x ) return false
   COMPARE( iBus );
   COMPARE( iPort );
   COMPARE( iLevel );
@@ -18,12 +18,14 @@ bool UsbStorageDevice::operator==(const UsbStorageDevice& other) const
 #undef COMPARE
 }
 
+// What is this?
+#if 0
 void UsbStorageDevice::SetOsMountDir( const CString &s )
 {
 	sOsMountDir = s;
 	FixSlashesInPlace( sOsMountDir );
 }
-
+#endif
 
 MemoryCardDriver *MakeMemoryCardDriver()
 {