fix copeland

ia04/comsoc/copeland.go

 package comsoc
 
 func CopelandSWF(p Profile) (count Count, err error) {
+	count = make(map[Alternative]int)
 	firstProfile := p[0]
 	// Generate every combination of two different alternatives.
 	for _, couple := range generateCouples(firstProfile) {

ia04/comsoc/majority.go

 package comsoc
 
 func MajoritySWF(p Profile) (count Count, err error) {
-	count = Count(make(map[Alternative]int))
+	count = make(map[Alternative]int)
 	for _, alts := range p {
 		count[alts[0]] += 1
 	} // 0-votes alternatives are not included