Bug in TA 0.984 VCD-to-TIM conversion: 32-bit bus conversion error

[Ed Carstens]

When a bus in VCD happens to change at the last timepoint, then that value gets used for the previous time interval (overwriting the correct value). Attached is an example VCD file. Take a look at hwdata[31:0]. It should go from 0xAABBAABB to 0xCCDDCCDD, but instead it goes from 0xAABBAABB to 0xEEFFEEFF.