Detect partial assignment of a fully assigned variable without compiler internal error
Detect partial assignment of a fully assigned variable without compiler internal error

git-svn-id: 240a5a8f52511bfe238f3ddc58e66f40694322e1@14339 dc4e9af1-7f46-4ead-bba6-71afc04862de

basheersubei/swift-t,basheersubei/swift-t,JohnPJenkins/swift-t,basheersubei/swift-t,swift-lang/swift-t,swift-lang/swift-t,basheersubei/swift-t,JohnPJenkins/swift-t,blue42u/swift-t,swift-lang/swift-t,basheersubei/swift-t,swift-lang/swift-t,swift-lang/swift-t,swift-lang/swift-t,basheersubei/swift-t,JohnPJenkins/swift-t,blue42u/swift-t,JohnPJenkins/swift-t,blue42u/swift-t,blue42u/swift-t,blue42u/swift-t,JohnPJenkins/swift-t,swift-lang/swift-t,JohnPJenkins/swift-t,JohnPJenkins/swift-t,blue42u/swift-t,basheersubei/swift-t,blue42u/swift-t