package.bbclass: fix python unclosed file ResourceWarning

Fix the following warning.

  ResourceWarning: unclosed file <_io.TextIOWrapper name='/.../systemd/1_239-r0/debugsources.list' mode='a' encoding='UTF-8'>

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/package.bbclass b/meta/classes/package.bbclass
index d1e9138c6686bcdba91aca5dbc7195089f96a5f3..0fe9576b4db43f2210996dfe3d4a1093ee3186cc 100644 (file)
--- a/meta/classes/package.bbclass
+++ b/meta/classes/package.bbclass
@@ -368,7 +368,8 @@ def append_source_info(file, sourcefile, d, fatal=True):
     # is still assuming that.
     debuglistoutput = '\0'.join(debugsources) + '\0'
     lf = bb.utils.lockfile(sourcefile + ".lock")
-    open(sourcefile, 'a').write(debuglistoutput)
+    with open(sourcefile, 'a') as sf:
+        sf.write(debuglistoutput)
     bb.utils.unlockfile(lf)