vl: avoid closing stdout with 'writeconfig'

'writeconfig' supports output to stdout (with '-'); when that happens, we must not close stdout, or further command line options that also use stdout will be impacted. (Although 'writeconfig' was copied from 'readconfig', the latter does not have the problem because it does not support reading from '-')

---
 vl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

index 9975e5a..215467f 100644
@@ -3855,7 +3855,9 @@ int main(int argc, char **argv, char **envp)
                         }
                     }
                     qemu_config_write(fp);
-                    fclose(fp);
+                    if (fp != stdout) {
+                        fclose(fp);
+                    }
                     break;
                 }
             case QEMU_OPTION_qtest:

1.7.11.7

22.04.2014 05:12, Chen Gang wrotr:

Thanks, applied to -trivial.

/mjt