From cf371fed130db79c6b857a657b7b13bed94e53d0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ciro=20Santilli=20=E5=85=AD=E5=9B=9B=E4=BA=8B=E4=BB=B6=20?=
 =?UTF-8?q?=E6=B3=95=E8=BD=AE=E5=8A=9F?= <ciro.santilli@gmail.com>
Date: Mon, 4 Jan 2021 00:00:01 +0000
Subject: [PATCH] fix ./build-qemu --clean

Was failing with:

```
TypeError: clean_pre() takes 1 positional argument but 2 were given
```
---
 common.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/common.py b/common.py
index 384754f..3b35daa 100644
--- a/common.py
+++ b/common.py
@@ -1997,7 +1997,7 @@ after configure, e.g. SCons. Usually contains specific targets or other build fl
                 )
         return ret
 
-    def clean_pre(self):
+    def clean_pre(self, build_dir):
         pass
 
     def clean(self):
@@ -2007,7 +2007,7 @@ after configure, e.g. SCons. Usually contains specific targets or other build fl
             self.sh.rmrf(build_dir)
         self.clean_post(build_dir)
 
-    def clean_post(self):
+    def clean_post(self, build_dir):
         pass
 
     def build(self):