Use glib memory allocation and free functions

qemu_malloc/qemu_free no longer exist after this commit.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/ui/curses.c b/ui/curses.c
index d29b6cf..c2be2c6 100644
--- a/ui/curses.c
+++ b/ui/curses.c
@@ -354,7 +354,7 @@
 #endif
 #endif
 
-    dcl = (DisplayChangeListener *) qemu_mallocz(sizeof(DisplayChangeListener));
+    dcl = (DisplayChangeListener *) g_malloc0(sizeof(DisplayChangeListener));
     dcl->dpy_update = curses_update;
     dcl->dpy_resize = curses_resize;
     dcl->dpy_refresh = curses_refresh;