init iteration

src/expire.cpp

@@ -334,7 +334,7 @@ void pexpireMemberAtCommand(client *c)
     static int timelimit_exit = 0;      /* Time limit hit in previous call? */
     static long long last_fast_cycle = 0; /* When last fast cycle ran. */
 
-    int j, iteration;
+    int j, iteration = 0;
     int dbs_per_call = CRON_DBS_PER_CALL;
     long long start = ustime(), timelimit, elapsed;