[lit] Fix another test case that r374652 missed

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@375058 91177308-0d34-0410-b5e6-96231b3b80d8

test/clang-include-fixer/merge.test

diff --git a/test/clang-include-fixer/merge.test b/test/clang-include-fixer/merge.test
index 75b4d6e..6e65e51 100644
--- a/test/clang-include-fixer/merge.test
+++ b/test/clang-include-fixer/merge.test
@@ -1,6 +1,6 @@
 # RUN: find-all-symbols -merge-dir=%S/Inputs/merge %t.merged
 # RUN: sed '/^#/d' %s > %t.golden
-# RUN: diff -u %t.golden %t.merged
+# RUN: diff --strip-trailing-cr -u %t.golden %t.merged
 ---
 Name:            bar
 Contexts: