test_librbd.cc: fix USE_AFTER_FREE

Fix for:
CID 1251462 (#1 of 1): Use after free (USE_AFTER_FREE)
1. alias: Assigning: cur_name = names. Now both point to the same storage.
3. freed_arg: free frees names.
6. pass_freed_arg: Passing freed pointer cur_name as an argument to printf.

Signed-off-by: Danny Al-Gaaf <[email protected]>

Author: dalgaaf

src/test/librbd/test_librbd.cc

@@ -333,7 +333,7 @@ int test_ls(rados_ioctx_t io_ctx, size_t num_expected, ...)
     printf("expected = %s\n", expected);
     std::set<std::string>::iterator it = image_names.find(expected);
     if (it != image_names.end()) {
-      printf("found %s\n", cur_name);
+      printf("found %s\n", expected);
       image_names.erase(it);
     } else {
       ADD_FAILURE() << "Unable to find image " << expected;