Fix Python 3.14 compatibility

Author: djhoese

pyresample/_spatial_mp.py

@@ -188,7 +188,7 @@ def _run_jobs(target, args, nprocs):
         p.join()
     if ierr.value != 0:
         raise RuntimeError('%d errors in worker processes. Last one reported:\n%s' %
-                           (ierr.value, warn_msg.value._object_hook()))
+                           (ierr.value, warn_msg.value))
 
 # This is executed in an external process: