MSan: blacklist an uninit in third-party code.

BUG=116277,341917
TBR=eugenis@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/212953006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@259614 0039d316-1c4b-4281-b951-d872f2087c98

tools/msan/blacklist.txt

@@ -21,3 +21,6 @@ fun:*GetRESIds*
 # False positives in SSE intrinsics. To be fixed in Clang.
 # http://://code.google.com/p/memory-sanitizer/issues/detail?id=48
 fun:*S32A_Opaque_BlitRow32_SSE2*
+
+# Uninit in zlib. http://crbug.com/116277
+fun:*MOZ_Z_deflate*