Spray an 8x8-inch baking pan with non-stick vegetable spray. In a 2-1/2 quart saucepan, combine eggnog, sugar, corn syrup, and salt. Cook, stirring frequently, until mixture forms a soft ball when dropped into cold water. Cool to lukewarm; add butter and beat until candy begins to lose its gloss. Stir in cherries and pecans. Quickly spread in prepared baking pan. Let stand until firm. Cut into squares.