Suppress new warning that libunwind trips.

Test: make checkbuild
Bug: None
Change-Id: I34cc42a8f809a4439a64babccc4cdfce73ace9b4
diff --git a/Android.bp b/Android.bp
index 841e19d..0e2f170 100644
--- a/Android.bp
+++ b/Android.bp
@@ -39,6 +39,7 @@
     "-Wextra",
     "-Wno-unused-function",
     "-Wno-unused-parameter",
+    "-Wno-unused-local-typedef",
     "-Werror",
 ]