Fix member suggestion failing

Author: gaspergrom

frontend/src/modules/member/pages/member-merge-suggestions-page.vue

@@ -202,8 +202,8 @@ const fetch = (page) => {
       [membersToMerge.value] = res.rows;
       const { members } = membersToMerge.value;
       // Set member with maximum identities and activities as primary
-      if ((members[0].identities.length < members[1].identities.length)
-        || (members[0].activityCount < members[1].activityCount)) {
+      if (members.length > 2 && ((members[0].identities.length < members[1].identities.length)
+        || (members[0].activityCount < members[1].activityCount))) {
         primary.value = 1;
       }
     })