[PATCH] [Msan] Fix the readlink unit test to pass on FreeBSD

[Evgeniy Stepanov]

LGTM


================
Comment at: lib/msan/tests/msan_test.cc:81
@@ -80,2 +80,3 @@
 # define SUBFILE_TO_READ "cat"
+# define SYMLINK_TO_READ "/usr/bin/tar"
 #else
----------------
Does not look very reliable, but ok.

http://reviews.llvm.org/D7052

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