Closes #4704, prevents us from trying to perform operations on a null tree path.
Closes #4704, prevents us from trying to perform operations on a null tree path.
damianmoore/shotwell,abrauchli/shotwell,ritchiewilson/shotwell,jimbonator/shotwell,h4ck3rm1k3/shotwell,ritchiewilson/shotwell,abrauchli/shotwell,h4ck3rm1k3/shotwell,abrauchli/shotwell,ritchiewilson/shotwell,Sanva/shotwell-gsoc,polymeris/shotwell,Sanva/shotwell-gsoc,Sanva/shotwell-gsoc,polymeris/shotwell,jimbonator/shotwell,jimbonator/shotwell,damianmoore/shotwell,polymeris/shotwell,damianmoore/shotwell,h4ck3rm1k3/shotwell