Check that handle is non-NULL before dereferencing it

diff --git a/lib/dns/dnstap.c b/lib/dns/dnstap.c
index 219652479c6fd418e10ffa1f5112c3f7b88cbdf1..f107b990c9ec9cee48abc948bf4b2db422d458bc 100644 (file)
--- a/lib/dns/dnstap.c
+++ b/lib/dns/dnstap.c
@@ -895,7 +895,9 @@ dns_dt_open(const char *filename, dns_dtmode_t mode, isc_mem_t *mctx,
        handle = NULL;
 
  cleanup:
-       if (result != ISC_R_SUCCESS && handle->reader != NULL) {
+       if (result != ISC_R_SUCCESS &&
+           handle != NULL && handle->reader != NULL)
+       {
                fstrm_reader_destroy(&handle->reader);
                handle->reader = NULL;
        }