[cairo] Error handling patch (win32)

[J. Ali Harlow]

I thought I'd test the win32 build of cvs HEAD with 0.6 coming fast:

/home/avrc/external/cairo/devel/share/src/src/cairo-win32-surface.c: In  
function `_cairo_win32_surface_get_subimage':
/home/avrc/external/cairo/devel/share/src/src/cairo-win32- 
surface.c:373: error: structure has no member named `status'

/home/avrc/external/cairo/devel/share/src/src/cairo-win32-font.c: In  
function `_compute_a8_mask':
/home/avrc/external/cairo/devel/share/src/src/cairo-win32-font.c:1012:  
error: structure has no member named `status'
/home/avrc/external/cairo/devel/share/src/src/cairo-win32-font.c: In  
function `_cairo_win32_scaled_font_show_glyphs':
/home/avrc/external/cairo/devel/share/src/src/cairo-win32-font.c:1085:  
error: structure has no member named `status'

Unfortunately, fixing these needs some understanding of the new error  
handling which I currently lack. If it's not obvious what the fix  
should be I'll try and do some quick learning :-)

Cheers,

-- 
Ali Harlow                              Email: ali at avrc.city.ac.uk
Senior Research Officer                 Tel:   (020) 7040 4348
Applied Vision Research Centre          Intl: +44 20 7040 4348
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