int sym_close_environment(sym_environment *env)
This routine closes the environment and returns the allocated memory.
| sym_environment *env | INOUT | Pointer to the SYMPHONY environment. |
| ERROR__USER | Error. User error detected in user_free_master() function. |
| FUNCTION_TERMINATED_ABNORMALLY | Function invoked unsuccessfully. |
| FUNCTION_TERMINATED_NORMALLY | Function invoked successfully. |