database.cc: Document better pieces of glib that we're using.

diff --git a/database.cc b/database.cc
index a53651035d9febd791b56c5d2b631b9d4db96da7..abae58205f897779871113199c703798d7cbfb8a 100644 (file)
--- a/database.cc
+++ b/database.cc
@@ -24,7 +24,7 @@
 
 #include <xapian.h>
 
-#include <glib.h> /* g_strdup_printf, g_free, GHashTable */
+#include <glib.h> /* g_strdup_printf, g_free, GPtrArray, GHashTable */
 
 using namespace std;