Add an assertion to config_line_append().

diff --git a/src/common/confline.c b/src/common/confline.c
index c65560bbf3b2edca70c3db2e38f739514de11d4d..6ec3b619dc7af00eaea59c4e448fed568086484d 100644 (file)
--- a/src/common/confline.c
+++ b/src/common/confline.c
@@ -16,6 +16,8 @@ config_line_append(config_line_t **lst,
                    const char *key,
                    const char *val)
 {
+  tor_assert(lst);
+
   config_line_t *newline;
 
   newline = tor_malloc_zero(sizeof(config_line_t));