Let the application free the buffer data.

simgear/sound/sample_openal.cxx

@@ -179,8 +179,6 @@ SGSoundSample::SGSoundSample( unsigned char *_data, int len, int _freq ) :
         throw sg_exception("Failed to buffer data.");
     }
 
-    free(_data);
-
     print_openal_error("constructor return");
 }
 

simgear/sound/sample_openal.hxx

@@ -115,6 +115,7 @@ public:
     /**
      * Constructor.
      * @param _data Pointer to a memory buffer containing the sample data
+       the application is responsible for freeing the buffer data.
      * @param len Byte length of array
      * @param _freq Frequency of the provided data (bytes per second)
        should usually be true unless you want to manipulate the data