build: Add a missing file to MAINTAINERCLEANFILES

diff --git a/backends/telepathy/lib/Makefile.am b/backends/telepathy/lib/Makefile.am
index fe0d596..103f3de 100644 (file)
--- a/backends/telepathy/lib/Makefile.am
+++ b/backends/telepathy/lib/Makefile.am
@@ -177,6 +177,7 @@ dist_vapi_DATA = \
 MAINTAINERCLEANFILES = \
        $(folks_telepathy_valasources:.vala=.c) \
        libfolks_telepathy_la_vala.stamp \
+       libtp_lowlevel_la_vala.stamp \
        folks/folks-telepathy.h \
        folks-telepathy.vapi \
        $(dist_noinst_DATA) \