Merged r12070 from trunk to 2.3-stable
not use assert_not_nil in Errors#[].
r7593 etc. replaced Rails2 Errors#on.Rails3 Errors#[] always return array.So, Rails3 Errors#[] is always not nil.
Merged r12070 from trunk to 2.3-stable
not use assert_not_nil in Errors#[].
r7593 etc. replaced Rails2 Errors#on.
Rails3 Errors#[] always return array.
So, Rails3 Errors#[] is always not nil.