[Minor] Add length check for array iteration

diff --git a/src/libutil/util.h b/src/libutil/util.h
index 40144f7f70f4e2d84a1fe665f6dfdb0cdaec173c..221ebc0d409ef499d9ca994ac4ec464758f86beb 100644 (file)
--- a/src/libutil/util.h
+++ b/src/libutil/util.h
@@ -516,5 +516,5 @@ gdouble rspamd_normalize_probability (gdouble x, gdouble bias);
  */
 guint64 rspamd_tm_to_time (const struct tm *tm, glong tz);
 
-#define PTR_ARRAY_FOREACH(ar, i, cur) if (ar != NULL) for ((i) = 0, (cur) = g_ptr_array_index((ar), 0); (i) < (ar)->len; (cur) = g_ptr_array_index((ar), (i + 1)), ++(i))
+#define PTR_ARRAY_FOREACH(ar, i, cur) if (ar != NULL && ar->len > 0) for ((i) = 0, (cur) = g_ptr_array_index((ar), 0); (i) < (ar)->len; (cur) = g_ptr_array_index((ar), (i + 1)), ++(i))
 #endif