No more trailing spaces in Redis source code.

src/t_set.c

@@ -515,7 +515,7 @@ void srandmemberWithCountCommand(redisClient *c) {
             size--;
         }
     }
-    
+
     /* CASE 4: We have a big set compared to the requested number of elements.
      * In this case we can simply get random elements from the set and add
      * to the temporary set, trying to eventually get enough unique elements