[PATCH] libibmad: add explicit extern for ibdebug prototype

[Sasha Khapyorsky <sashak-smomgflXvOZWk0Htik3J/w@public.gmane.org>]

'ibdebug' variable was not declared as 'extern', as result includers
(libraries and programs) may have its own copy of this variable. As
example libibnetdisc and ibnetdiscover.

Signed-off-by: Sasha Khapyorsky <sashak-smomgflXvOZWk0Htik3J/w@public.gmane.org>
---
 libibmad/include/infiniband/mad.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libibmad/include/infiniband/mad.h b/libibmad/include/infiniband/mad.h
index 02ef551..0687c06 100644
--- a/libibmad/include/infiniband/mad.h
+++ b/libibmad/include/infiniband/mad.h
@@ -1031,7 +1031,7 @@ MAD_EXPORT ib_mad_dump_fn
     mad_dump_perfcounters_xmt_disc, mad_dump_perfcounters_rcv_err,
     mad_dump_portsamples_control;
 
-MAD_EXPORT int ibdebug;
+MAD_EXPORT extern int ibdebug;
 
 #if __BYTE_ORDER == __LITTLE_ENDIAN
 #ifndef ntohll
-- 
1.7.0.4

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