fixed exit error on non-present chroot

prod_build/linux/debian/conf/version_info

-VERSION_FILE=config.pri
-VERSION_ENTRIES="VER_MAJ VER_MIN VER_PAT VER_CODE"
-VERSION_FORMAT="VER_MAJ.VER_MIN-VER_PAT"

prod_build/linux/debian/scripts/pre-build.sh

@@ -124,8 +124,10 @@ CHROOT_PREFIX=$1
 for distr in $HOST_DISTR_VERSIONS; do #we need to install required dependencies under schroot.
 	for arch in $HOST_ARCH_VERSIONS; do
 		echo "$CHROOT_PREFIX-$distr-$arch"
-		schroot -c $CHROOT_PREFIX-$distr-$arch -- prod_build/linux/debian/scripts/chroot/pre-build.sh "$PKG_DEPS"
+		schroot -c $CHROOT_PREFIX-$distr-$arch -- prod_build/linux/debian/scripts/chroot/pre-build.sh "$PKG_DEPS" || errcode=$?
+		[[ $errcode != 0 ]] && echo "Problems with $CHROOT_PREFIX-$distr-$arch occured. You had installed it, right?"
 	done
 done
+exit 0
 
 ## Maybe we do have the version required? Then we don't need to build it again. CHECK IT THERE!