Remove transmute_mut calls in types::array
Remove transmute_mut calls in types::array

There are transmute calls inside of match blocks that I don't think
should be necessary but I can't figure out how to get rid of them right
now.

sfackler/rust-postgres,achanda/rust-postgres,jmesmon/rust-postgres,sfackler/rust-postgres,tempbottle/rust-postgres,tempbottle/rust-postgres,jmesmon/rust-postgres,achanda/rust-postgres,ddrmanxbxfr/rust-postgres,ddrmanxbxfr/rust-postgres