Fix whitepace around brackets

runtests.py

@@ -128,7 +128,7 @@ def readlinks(self, dir):
         """return a list of (linkname, linktarget) tuples for all files in a directory"""
         pj = os.path.join
         readlink = os.readlink
-        result = [ (l, readlink(pj(dir, l))) for l in os.listdir(dir) ]
+        result = [(l, readlink(pj(dir, l))) for l in os.listdir(dir)]
         result.sort()
         return result