Don't try to expand non-string values

(Bitbake rev: fe36a726b9f930bbd6fd758c0aee78559e95f02b)

Signed-off-by: Chris Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

bitbake/lib/bb/parse/parse_py/BBHandler.py

@@ -68,8 +68,8 @@ def inherit(files, d):
     __inherit_cache = data.getVar('__inherit_cache', d) or []
     fn = ""
     lineno = 0
-    files = data.expand(files, d)
     for file in files:
+        file = data.expand(file, d)
         if file[0] != "/" and file[-8:] != ".bbclass":
             file = os.path.join('classes', '%s.bbclass' % file)