Comment 162 for bug 179988

Tried this, but it doesn't set the fallback to 300. Oh well, worth a try. Hopefully Ishmal can build the patched cairo and we won't need this...

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    if (x_dpi < 100) {
         cairo_surface_set_fallback_resolution (surface, (x_dpi/72.0) * 300, (y_dpi/72.0) * 300);
         return surface;
 }
    else {
         return surface;
    }
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