Fix code warning.

Change-Id: Ib11fb49f528d3688351ae349d5b4e307c28b3967
diff --git a/mbtk/test/libmbtk_ftp/mbtk_ftp_test.c b/mbtk/test/libmbtk_ftp/mbtk_ftp_test.c
index 481108d..ce69cde 100755
--- a/mbtk/test/libmbtk_ftp/mbtk_ftp_test.c
+++ b/mbtk/test/libmbtk_ftp/mbtk_ftp_test.c
@@ -122,18 +122,19 @@
     char cmd[50];
     while(1) {
         memset(cmd, 0, 50);
-        gets(cmd);
-        if(!strcasecmp(cmd, "q")) {
-            break;
-        } else {
-            ftp_cmd_process(handle, cmd);
+        if(fgets(cmd, sizeof(cmd), stdin) != NULL) {
+            if(!strcasecmp(cmd, "q")) {
+                break;
+            } else {
+                ftp_cmd_process(handle, cmd);
+            }
         }
 
         printf("CMD:");
     }
 
     printf("FTP test success.\n");
-ftp_quit:
+//ftp_quit:
     mbtk_ftp_quit(handle);
 ftp_exit:
     mbtk_ftp_deinit(handle);