BUILD: cirrus-ci: add ERR=1 to freebsd builds
diff --git a/.cirrus.yml b/.cirrus.yml
index 5c7c840..1a07c80 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -10,7 +10,7 @@
   script:
     - git clone https://github.com/VTest/VTest.git ../vtest
     - make -C ../vtest
-    - gmake CC=clang V=1 TARGET=freebsd USE_ZLIB=1 USE_PCRE=1 USE_OPENSSL=1 USE_LUA=1 LUA_INC=/usr/local/include/lua53 LUA_LIB=/usr/local/lib LUA_LIB_NAME=lua-5.3
+    - gmake CC=clang V=1 ERR=1 TARGET=freebsd USE_ZLIB=1 USE_PCRE=1 USE_OPENSSL=1 USE_LUA=1 LUA_INC=/usr/local/include/lua53 LUA_LIB=/usr/local/lib LUA_LIB_NAME=lua-5.3
     - ./haproxy -vv
     - ldd haproxy
     - env VTEST_PROGRAM=../vtest/vtest gmake reg-tests || (for folder in /tmp/*regtest*/vtc.*; do cat $folder/INFO $folder/LOG; done && exit 1)