[Minor] Add rspamd_min_heap_index helper method

src/libutil/heap.c

@@ -179,3 +179,12 @@ rspamd_min_heap_destroy (struct rspamd_min_heap *heap)
 		g_slice_free1 (sizeof (*heap), heap);
 	}
 }
+
+struct rspamd_min_heap_elt*
+rspamd_min_heap_index (struct rspamd_min_heap *heap, guint idx)
+{
+	g_assert (heap != NULL);
+	g_assert (idx >= 0 && idx < heap->ar->len);
+
+	return g_ptr_array_index (heap->ar, idx);
+}

src/libutil/heap.h

@@ -77,4 +77,13 @@ void rspamd_min_heap_remove_elt (struct rspamd_min_heap *heap,
  */
 void rspamd_min_heap_destroy (struct rspamd_min_heap *heap);
 
+/**
+ * Returns element from the heap with the specified index
+ * @param heap
+ * @param idx
+ * @return
+ */
+struct rspamd_min_heap_elt* rspamd_min_heap_index (struct rspamd_min_heap *heap,
+		guint idx);
+
 #endif /* SRC_LIBUTIL_HEAP_H_ */