Add '--enable-sanitize' from other osmocom projects

Change-Id: Iac9ce76ce4ca5f5247bc42c16bb365d94cfde156
diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh
index 4e21fd7..ebdc6ea 100755
--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -5,7 +5,7 @@
 osmo-clean-workspace.sh
 
 autoreconf --install --force
-./configure CFLAGS="-Werror" CPPFLAGS="-Werror"
+./configure --enable-sanitize CFLAGS="-Werror" CPPFLAGS="-Werror"
 $MAKE $PARALLEL_MAKE
 $MAKE distcheck