fix duplicated primary trigger on last window

Author: jcubic

demo.html

@@ -86,9 +86,9 @@
          });
          sysend.track('close', function(data) {
              count(data.count);
-             if (sysend.isPrimary()) {
+             if (data.count === 1) {
                  track('close: ' + id(data.id) + ', last - become primary');
-             } else if (data.wasPrimary) {
+             } else if (data.primary) {
                  track('close: ' + id(data.id) + ', primary was closed');
              } else {
                  track('close: ' + id(data.id));

sysend.js

@@ -476,21 +476,13 @@
                 if (data.wasPrimary && !primary) {
                     has_primary = false;
                 }
-                if (last) {
-                    primary = true;
-                    has_primary = true;
-                }
                 var payload = {
                     id: data.id,
                     count: target_count,
-                    wasPrimary: data.wasPrimary,
-                    primary: primary,
+                    primary: data.wasPrimary,
                     self: data.id === target_id
                 };
                 trigger(handlers.close, payload);
-                if (primary) {
-                    trigger(handlers.primary);
-                }
             });
 
             sysend.on('__window__', function(data) {