Handle a filter that evaluates to an empty "matches everything" filter.

svn path=/trunk/; revision=17835

1 files changed, 4 insertions, 1 deletions

diff --git a/dftest.c b/dftest.c
index 96cb58c2e2..a0d21997b4 100644
--- a/dftest.c
+++ b/dftest.c
@@ -141,7 +141,10 @@ main(int argc, char **argv)
 
 	printf("\n\n");
 
-	dfilter_dump(df);
+	if (df == NULL)
+		printf("Filter is empty\n");
+	else
+		dfilter_dump(df);
 
 	epan_cleanup();
 	exit(0);