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Avoid crashing if Rime/Chameleon is not initialized when Rime code is run

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This commit is contained in:
adamdunkels 2008-07-03 23:13:31 +00:00
parent 51f4ab8b2c
commit cfcdac3122
1 changed files with 7 additions and 2 deletions
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9
core/net/rime/chameleon.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: chameleon.c,v 1.3 2008/03/03 20:20:33 adamdunkels Exp $
* $Id: chameleon.c,v 1.4 2008/07/03 23:13:31 adamdunkels Exp $
*/
/**
@ -150,6 +150,11 @@ chameleon_output(struct channel *c)
int
chameleon_hdrsize(const struct rimebuf_attrlist attrlist[])
{
return header_module->hdrsize(attrlist);
if(header_module != NULL &&
header_module->hdrsize != NULL) {
return header_module->hdrsize(attrlist);
} else {
return 0;
}
}
/*---------------------------------------------------------------------------*/