Don't do anything if no movie argument is present
Don't do anything if no movie argument is present

The movie argument can be undef at times. In that case this check will prevent a useless SQL query.

Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode