fixup! survey: add ability to track prioritized lists

Author: dscho

builtin/survey.c

@@ -176,10 +176,9 @@ static void maybe_insert_into_top_size(struct survey_report_top_table *top,
 	else
 		top->nr++;
 
-	for (size_t i = top->nr - 1; i > pos; i--)
-		memcpy(&sz_array[i], &sz_array[i - 1], sizeof(*sz_array));
-
-	memcpy(&sz_array[pos], summary, sizeof(*summary));
+	memmove(sz_array + pos + 1, sz_array + pos,
+		(top->nr - pos - 1) * sizeof(*sz_array));
+	memcpy(sz_array + pos, summary, sizeof(*summary));
 	sz_array[pos].label = xstrdup(summary->label);
 }