set_default_flash shouldn't override an already-set flash message.
set_default_flash shouldn't override an already-set flash message.

git-svn-id: 30fef0787527f3d4b2d3639a5d6955e4dc84682e@134 c18eca5a-f828-0410-9317-b2e082e89db6

hcatlin/make_resourceful,C3/make_resourceful,hcatlin/make_resourceful,jeroenvandijk/make_resourceful_i18n