fixes export dialog pango errors
fixes export dialog pango errors

jimbonator/shotwell,abrauchli/shotwell,ritchiewilson/shotwell,damianmoore/shotwell,polymeris/shotwell,ritchiewilson/shotwell,h4ck3rm1k3/shotwell,Sanva/shotwell-gsoc,jimbonator/shotwell,abrauchli/shotwell,damianmoore/shotwell,jof/shotwell,Sanva/shotwell-gsoc,jof/shotwell,Sanva/shotwell-gsoc,damianmoore/shotwell,h4ck3rm1k3/shotwell,jof/shotwell,ritchiewilson/shotwell,polymeris/shotwell,abrauchli/shotwell,jimbonator/shotwell,polymeris/shotwell,h4ck3rm1k3/shotwell