glib.supp: Ignore one-time xdgmime allocations

xdgmime makes some one-off allocations when being set up. Ignore them in
the suppression file, since they’re not really a leak.

This should fix the contenttype test running under valgrind.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

tools/glib.supp

@@ -1109,3 +1109,19 @@
 	fun:g_hash_table_insert
 	fun:quark_new
 }
+
+{
+	xdg_mime_init_malloc
+	Memcheck:Leak
+	fun:malloc
+	...
+	fun:xdg_mime_init
+}
+
+{
+	xdg_mime_init_calloc
+	Memcheck:Leak
+	fun:calloc
+	...
+	fun:xdg_mime_init
+}