Fix missing substitution

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@44420 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/python/setup.py.sed

@@ -38,7 +38,7 @@ def init(gisbase, dbase, location, mapset):
     """
     os.environ['PATH'] += os.pathsep + os.path.join(gisbase, 'bin') + \
         os.pathsep + os.path.join(gisbase, 'scripts')
-    if not os.environ.has_key('LD_LIBRARY_PATH'):
+    if not os.environ.has_key('@LD_LIBRARY_PATH_VAR@'):
         os.environ['@LD_LIBRARY_PATH_VAR@'] = ''
     os.environ['@LD_LIBRARY_PATH_VAR@'] += os.path.join(gisbase, 'lib')