configure: try to use -Werror=unknown-warning-option if available (2/2)

[Austin English]

--
-Austin
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From d65f9e1482dfbea0a19617f7f0c344d2534be23f Mon Sep 17 00:00:00 2001
From: Austin English <austinenglish at gmail.com>
Date: Wed, 15 May 2013 12:32:26 -0700
Subject: configure: try to use -Werror=unknown-warning-option if available (2/2)

---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index b44673e..c47d146 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1773,6 +1773,7 @@ then
   fi
 
   dnl Check for some compiler flags
+  WINE_TRY_CFLAGS([-Werror=unknown-warning-option])
   WINE_TRY_CFLAGS([-fno-builtin],[AC_SUBST(BUILTINFLAG,"-fno-builtin")])
   WINE_TRY_CFLAGS([-fno-strict-aliasing])
   WINE_TRY_CFLAGS([-Wdeclaration-after-statement])
-- 
1.8.2.1