tests/run-tests.py: Fix to work on qemu.

dpgeorge · dpgeorge · commit fb8cb0ac4962 · 2025-08-19T17:26:37.000+10:00
Signed-off-by: Damien George &lt;damien@micropython.org&gt;
diff --git a/tests/run-tests.py b/tests/run-tests.py
@@ -346,9 +346,11 @@ def detect_test_platform(pyb, args):
     tw = None
     if pyb:
         tw = detect_target_wiring_script(args)
+        data = b""
         if tw:
             with open("target_wiring/" + tw, "rb") as f:
-                pyb.target_wiring_script = f.read()
+                data = f.read()
+        pyb.target_wiring_script = data
 
     # Print the detected information about the target.
     print("platform={}".format(platform), end="")
