[Openal] [openAl Soft] alGetString returning NULL pointer?

[Andre Krause]

currently, alGetString returns a null pointer if there is no valid context.
wouldnt it be a better idea to always return a valid string, so for example an 
error message string that says something like "no valid context" or such?

that way one could easily write cerr << alGetString(alGetError());

here is the current implementation:

ALAPI const ALchar* ALAPIENTRY alGetString(ALenum pname)
{
     const ALchar *value;
     ALCcontext *pContext;

     pContext = alcGetCurrentContext();
     if(!pContext)
     {
         alSetError(AL_INVALID_OPERATION);
         return NULL; <-- is this a good idea ?
     }