add *.check for scala#18265

Hamza Remmal · Hamza Remmal · commit 4e51d99ca3ca · 2023-08-22T17:51:57.000+01:00
diff --git a/tests/neg/i18265.check b/tests/neg/i18265.check
@@ -0,0 +1,6 @@
+-- [E019] Syntax Error: tests/neg/i18265.scala:5:13 ----------------------------
+5 |    def twice
+  |             ^
+  |             Missing return type
+  |
+  | longer explanation available when compiling with `-explain`
