[nscl] Fix frozen srcdoc frames having "null" as their content.

hackademix · hackademix · commit ca3762389f5d · 2026-04-10T23:48:18.000+02:00
diff --git a/src/nscl b/src/nscl
@@ -1 +1 @@
-Subproject commit 14509960b8159d9d94340676cdbf341122e8c662
+Subproject commit 864e8bc5189a3f7d9d72a7a5cf440b2ffd5b4ef0
