[mingw-boost] Fix the build

[epienbro]

commit a0f1c76d9c9434913f0c2c1442cc701b5ba4a851
Author: Erik van Pienbroek <epienbro at fedoraproject.org>
Date:   Wed Mar 7 16:56:35 2012 +0100

    Fix the build

 mingw-boost.spec |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/mingw-boost.spec b/mingw-boost.spec
index e81320e..d8a3423 100644
--- a/mingw-boost.spec
+++ b/mingw-boost.spec
@@ -122,7 +122,7 @@ Static version of the MinGW Windows Boost C++ library.
 %{mingw32_debug_package}
 
 %prep
-%setup -q -n %{toplev_dirname}
+%setup -q -n boost_%{version_enc}
 
 # CMake framework (CMakeLists.txt, *.cmake and documentation files)
 %patch0 -p1