minor aesthetic change

src/pubsub.c

 #include "redis.h"
 
+/*-----------------------------------------------------------------------------
+ * Pubsub low level API
+ *----------------------------------------------------------------------------*/
+
 void freePubsubPattern(void *p) {
     pubsubPattern *pat = p;
 
@@ -215,6 +219,10 @@ int pubsubPublishMessage(robj *channel, robj *message) {
     return receivers;
 }
 
+/*-----------------------------------------------------------------------------
+ * Pubsub commands implementation
+ *----------------------------------------------------------------------------*/
+
 void subscribeCommand(redisClient *c) {
     int j;