Fix bug of clearing COF_TEMP_MARK. draw_shapes_in_dirty_areas() mark COF_TEMP_MARK on coords and clear them before leaving. But, it always clear the same one coord for several times and keep others untouched. It is a logical error. It can be avoided by avoiding to use the variable at mutliple place for different purpose in a function, and compiler will check it out by yelling that the variable is used before assigning a value.

// -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
// vim: sw=4:ts=8:sts=4
#ifndef __MB_BASIC_TYPES_H_
#define __MB_BASIC_TYPES_H_

typedef float co_aix;
typedef float co_comp_t;
typedef struct _grad_stop {
    co_aix offset;
    co_comp_t r, g, b, a;
} grad_stop_t;

#endif /* __MB_BASIC_TYPES_H_ */