[mingw-eigen3] Fix commit

[Sandro Mani]

commit 2c497c6b92844622decbd29501757e37ad48b721
Author: Sandro Mani <manisandro at gmail.com>
Date:   Wed Feb 26 18:42:38 2014 +0100

    Fix commit

 mingw-eigen3.spec |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/mingw-eigen3.spec b/mingw-eigen3.spec
index f47bd33..5fdf45e 100644
--- a/mingw-eigen3.spec
+++ b/mingw-eigen3.spec
@@ -1,6 +1,7 @@
 %{?mingw_package_header}
 
 %global mingw_pkg_name eigen3
+%global commit 6b38706d90a9
 
 Name:           mingw-%{mingw_pkg_name}
 Version:        3.2.1
@@ -48,7 +49,7 @@ Summary:                %{summary}
 %{summary}
 
 %prep
-%setup -q -n eigen-eigen-ffa86ffb5570
+%setup -q -n eigen-eigen-%{commit}
 %patch0 -p2
 %patch1 -p1