a bug in the runoff test from W3

[dimisb]

// Code passes tests:
bool vote(int voter, int rank, string name)
{
for (int i = 0; i < candidate_count; i++)
{
// should be if (strcmp(name, candidates[i].name) == 0)
if (name == candidates[i].name)
{
preferences[voter][rank] = i;
return true;
}
}
return false;