insane: Don't used cachedpath for os.lstat()

The functions behave slightly differently to the functions they're
caching and the use in insane.bbclass isn't compatible. For now, to
avoid build failures, switch back to the stat calls. We may be able
to improve cachedpath or change the call sites.

(From OE-Core rev: fa771ae887ab5152f043748cf3419735831bcf7b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes-global/insane.bbclass

@@ -434,9 +434,8 @@ def package_qa_check_buildpaths(path, name, d, elf):
     explicitly ignored.
     """
     import stat
-    global cpath
     # Ignore symlinks/devs/fifos
-    mode = cpath.lstat(path).st_mode
+    mode = os.lstat(path).st_mode
     if stat.S_ISLNK(mode) or stat.S_ISBLK(mode) or stat.S_ISFIFO(mode) or stat.S_ISCHR(mode) or stat.S_ISSOCK(mode):
         return
 
@@ -1050,7 +1049,7 @@ def package_qa_check_host_user(path, name, d, elf):
         return
 
     try:
-        stat = cpath.lstat(path)
+        stat = os.lstat(path)
     except OSError as exc:
         import errno
         if exc.errno != errno.ENOENT: