[fluid-dev] Add free() wrapper for proper memory management

[Pieter-Jan Briers]

Hi,

The documentation for fluid_settings_dupstr() says to use free() to free 
the string given by the function. I am trying to use the library from 
C#, and while .NET does have equivalents to malloc/free, there is no 
guarantee this matches the free() used by Fluidsynth. (At least with 
Linux CoreCLR it seems to, but especially on Windows this can easily get 
murky)

The result is that I am basically forced to leak the string given to me 
by fluid_settings_dupstr(), since I cannot correctly call free() as used 
by Fluidsynth.

Would it be possible to provide something along the lines of 
fluid_free(), which would simply be a wrapper to free()?

Thank you,

Pieter-Jan Briers