Avoid running compilers not present in the application's compiler list. (#2065)
Avoid running compilers not present in the application's compiler list. (#2065)

This would cause an error in applications which did not configure their `reloadable_compilers` option,
and did not have a default compiler (gettext) present.
iStefo/phoenix,rafbgarcia/phoenix,mschae/phoenix,ybur-yug/phoenix,eksperimental/phoenix,optikfluffel/phoenix,ericmj/phoenix,evax/phoenix,mobileoverlord/phoenix,0x00evil/phoenix,iStefo/phoenix,phoenixframework/phoenix,rafbgarcia/phoenix,keathley/phoenix,dmarkow/phoenix,korobkov/phoenix,ericmj/phoenix,Joe-noh/phoenix,jamilabreu/phoenix,nshafer/phoenix,bsmr-erlang/phoenix,0x00evil/phoenix,jwarwick/phoenix,cas27/phoenix,gjaldon/phoenix,nshafer/phoenix,bsmr-erlang/phoenix,jwarwick/phoenix,Ben-Evolently/phoenix,mitchellhenke/phoenix,optikfluffel/phoenix,mobileoverlord/phoenix,evax/phoenix,mschae/phoenix,CultivateHQ/phoenix,michalmuskala/phoenix,ybur-yug/phoenix,cas27/phoenix,stevedomin/phoenix,Gazler/phoenix,gjaldon/phoenix,stevedomin/phoenix,Gazler/phoenix,eksperimental/phoenix,Joe-noh/phoenix,optikfluffel/phoenix,phoenixframework/phoenix,Kosmas/phoenix,korobkov/phoenix,michalmuskala/phoenix,dmarkow/phoenix,mitchellhenke/phoenix,trarbr/phoenix,nshafer/phoenix,pap/phoenix,keathley/phoenix,pap/phoenix,trarbr/phoenix,phoenixframework/phoenix,CultivateHQ/phoenix,Kosmas/phoenix,rafbgarcia/phoenix,0x00evil/phoenix,jamilabreu/phoenix