clean up additional comments

src/main/java/network/brightspots/rcv/Tabulator.java

@@ -915,9 +915,6 @@ && isCandidateContinuing(cvr.getCurrentRecipientOfVote())) {
             continue;
           }
 
-          // handle testing in unit tests, remove this assert, and add break statement
-          // at end of this for loop
-
           // If this fails, it means the code failed to handle an overvote with multiple
           // continuing candidates.
           assert selectedCandidate == null;
@@ -934,6 +931,12 @@ && isCandidateContinuing(cvr.getCurrentRecipientOfVote())) {
               selectedCandidate,
               roundTallyByPrecinct,
               cvr.getPrecinct());
+
+          // There can be at most one continuing candidate in candidateSet; if there were more than
+          // one, we would have already flagged this as an overvote.
+          if (selectedCandidate != null) {
+            break;
+          }
         }
 
         // if we found a continuing candidate stop looking through rankings