lib/oe/packagedata: Use with to control file handle lifetime

(From OE-Core rev: 28b3635b7f40b627a9d6294a78589c78f0c682c8)

Signed-off-by: Ola x Nilsson <olani@axis.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oe/packagedata.py

@@ -17,9 +17,8 @@ def read_pkgdatafile(fn):
 
     if os.access(fn, os.R_OK):
         import re
-        f = open(fn, 'r')
-        lines = f.readlines()
-        f.close()
+        with open(fn, 'r') as f:
+            lines = f.readlines()
         r = re.compile("([^:]+):\s*(.*)")
         for l in lines:
             m = r.match(l)