Disable pipefail for lsan.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187274 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/lsan/lit_tests/lit.common.cfg b/lib/lsan/lit_tests/lit.common.cfg
index d52f64c..4ff672b 100644
--- a/lib/lsan/lit_tests/lit.common.cfg
+++ b/lib/lsan/lit_tests/lit.common.cfg
@@ -31,3 +31,4 @@
   config.unsupported = True
 
 config.suffixes = ['.c', '.cc', '.cpp']
+config.pipefail = False