eth/filters: remove explicit continue label in filterLogs (ethereum#2…

…4795)

The loop label can be removed because this 'continue' statement
is not in a nested loop.

eth/filters/filter.go

@@ -308,7 +308,7 @@ Logs:
 		}
 		// If the to filtered topics is greater than the amount of topics in logs, skip.
 		if len(topics) > len(log.Topics) {
-			continue Logs
+			continue
 		}
 		for i, sub := range topics {
 			match := len(sub) == 0 // empty rule set == wildcard