bitbake: knotty: Ensure consolelog file handle is closed

If we don't close the console log file handle, python prints a warning
about unclosed file handles upon exit which is annoying.

(Bitbake rev: 624dd92952b2fc736fd86abe5f2390b87b3a7dd3)

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

bitbake/lib/bb/ui/knotty.py

@@ -278,6 +278,7 @@ def main(server, eventHandler, params, tf = TerminalFilter):
         server.terminateServer()
         return
 
+    consolelog = None
     if consolelogfile and not params.options.show_environment and not params.options.show_versions:
         bb.utils.mkdirhier(os.path.dirname(consolelogfile))
         conlogformat = bb.msg.BBLogFormatter(format_str)
@@ -591,4 +592,8 @@ def main(server, eventHandler, params, tf = TerminalFilter):
         if e.errno == errno.EPIPE:
             pass
 
+    if consolelog:
+        logger.removeHandler(consolelog)
+        consolelog.close()
+
     return return_value