Turn some warnings into errors

Make warnings (when available) related to common memory-related issues
into errors to harden the source and decrease chance of errors.

Change-Id: Ied9c950dafa65f324cf31298b13b590f56139700
diff --git a/debian/control b/debian/control
index 79f18df..d9432e2 100644
--- a/debian/control
+++ b/debian/control
@@ -4,6 +4,7 @@
 Priority: optional
 Build-Depends: debhelper (>= 9),
                autotools-dev,
+               autoconf-archive,
                pkg-config,
                libgtp0-dev,
                libosmocore-dev,