Function PHYSFS_flush 

pub unsafe extern "C" fn PHYSFS_flush(
    handle: *mut PHYSFS_File,
) -> c_int

\fn int PHYSFS_flush(PHYSFS_File *handle) \brief Flush a buffered PhysicsFS file handle.

For buffered files opened for writing, this will put the current contents of the buffer to disk and flag the buffer as empty if possible.

For buffered files opened for reading or unbuffered files, this is a safe no-op, and will report success.

\param handle handle returned from PHYSFS_open*(). \return nonzero if successful, zero on error.

\sa PHYSFS_setBuffer \sa PHYSFS_close