Fixed pie drawing for case when there is only one segment and we're drawing in counter clockwise direction
Fixed pie drawing for case when there is only one segment and we're drawing in counter clockwise direction

shinjukunian/core-plot,core-plot/core-plot,core-plot/core-plot,shinjukunian/core-plot,shinjukunian/core-plot,core-plot/core-plot,shinjukunian/core-plot,shinjukunian/core-plot,core-plot/core-plot