close handle

mrbgems/mruby-io/src/io.c

@@ -600,6 +600,7 @@ fptr_finalize(mrb_state *mrb, struct mrb_io *fptr, int quiet)
     if (WaitForSingleObject(h, INFINITE) && GetExitCodeProcess(h, &status))
       if (!quiet)
         io_set_process_status(mrb, fptr->pid, (int)status);
+    CloseHandle(h);
 #endif
     fptr->pid = 0;
     /* Note: we don't raise an exception when waitpid(3) fails */