Fix irbuild test case to use WriteBuffer_internal

JukkaL · JukkaL · commit 3eaa9898a2bd · 2025-11-03T14:09:23.000Z
diff --git a/mypyc/test-data/irbuild-classes.test b/mypyc/test-data/irbuild-classes.test
@@ -1494,7 +1494,7 @@ def foo():
     r15, t :: int
     r16, u, r17, v :: u8
 L0:
-    r0 = WriteBuffer_internal_empty()
+    r0 = WriteBuffer_internal()
     b = r0
     r1 = 'foo'
     r2 = write_str_internal(b, r1)
