Fix more warnings.

Fix more warnings.

2008-12-25  Behdad Esfahbod  <behdad@gnome.org>

        * pango/modules.c (pango_module_load), (script_info_free):
        * pango/opentype/harfbuzz-gpos.c (HB_Load_GPOS_Table):
        * pango/pango-bidi-type.c:
        * pango/pango-coverage.c (pango_coverage_ref),
        (pango_coverage_unref):
        * pango/pango-engine.c (pango_engine_shape_real_covers),
        (fallback_engine_shape), (fallback_engine_covers):
        * pango/pango-fontmap.c (pango_font_map_init):
        * pango/pango-ot-ruleset.c (pango_ot_ruleset_finalize),
        (pango_ot_ruleset_new):
        * pango/pangofc-decoder.c (pango_fc_decoder_init),
        (pango_fc_decoder_class_init):
        * pango/pangofc-font.c (pango_fc_font_find_shaper),
        (pango_fc_font_get_coverage):
        * pango/pangofc-fontmap.c (pango_fc_font_map_list_families),
        (pango_fc_make_pattern), (pango_fc_font_map_get_patterns),
        (get_first_font), (_pango_fc_font_map_get_coverage),
        (cleanup_font), (pango_fc_font_description_from_pattern),
        (pango_fc_face_list_sizes), (pango_fc_family_list_faces):
        * pango/pangoft2-fontmap.c (pango_ft2_font_map_get_resolution):
        * pango/pangoft2-render.c (pango_ft2_renderer_init),
        (pango_ft2_renderer_draw_trapezoid):
        * pango/pangoft2.c (pango_ft2_font_get_face),
        (pango_ft2_font_real_unlock_face),
        (pango_ft2_free_glyph_info_callback):
        Fix more warnings.