simplify osx_archs trimming

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@11575 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: kyngchaos

python/configure.py.in

@@ -15,8 +15,7 @@ if sys.platform == 'darwin':
   qt_libs.append("QtSql")
   # possibility of universal build of bindings, if more than 1 arch
   osx_archs = '@CMAKE_OSX_ARCHITECTURES@'
-  if osx_archs and osx_archs [-1] == ';' :
-    osx_archs = osx_archs [:-1]
+  osx_archs = osx_archs.strip(';')
   if osx_archs.count(';') > 0:
     osx_universal = '@CMAKE_OSX_SYSROOT@'
   else: