[samba] Fix issue if __isa_bits is not defined.

[asn]

commit 7b0911ee43d08d8557315294ec21dffc87476175
Author: Andreas Schneider <asn at cryptomilk.org>
Date:   Fri Nov 21 16:17:17 2014 +0100

    Fix issue if __isa_bits is not defined.

 samba.spec |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/samba.spec b/samba.spec
index 32a2f66..e846496 100644
--- a/samba.spec
+++ b/samba.spec
@@ -44,7 +44,7 @@
 %endif
 
 %global libwbc_alternatives_suffix %nil
-%if %{__isa_bits} == 64
+%if 0%{?__isa_bits} == 64
 %global libwbc_alternatives_suffix -64
 %endif