[vala/wip/issue/838: 6/6] DO NOT PUSH tests: Use -Werror=unreachable-code

[Rico Tzschichholz <ricotz src gnome org>]

commit c3bb4fd0e1dc3547ef6af5cd808f3e6070712c04
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Aug 28 20:04:29 2019 +0200

    DO NOT PUSH tests: Use -Werror=unreachable-code

 configure.ac | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/configure.ac b/configure.ac
index 6de326bbb..6673073b2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -123,6 +123,7 @@ TEST_EXTRA_CFLAGS="-Werror=init-self \
 -Werror=return-type \
 -Werror=sequence-point \
 -Werror=uninitialized \
+-Werror=unreachable-code \
 -Werror=int-to-pointer-cast \
 -Werror=pointer-to-int-cast \
 -Werror=compare-distinct-pointer-types \