kex: init uptime value for mi cmd

modules_k/kex/mi_core.c

@@ -58,8 +58,8 @@
 #define SVNREVISION "unknown"
 #endif
 
-static time_t kmi_up_since;
-static str    kmi_up_since_ctime;
+static time_t kmi_up_since = 0;
+static str    kmi_up_since_ctime = {0, 0};
 static cfg_ctx_t	*_kex_cfg_ctx = NULL;
 
 static int init_mi_uptime(void)
@@ -382,5 +382,9 @@ int init_mi_core(void)
 		return -1;
 	}
 
+	if(init_mi_uptime()<0) {
+		return -1;
+	}
+
 	return 0;
 }