Add a new error for unexpected semi-colon before closing delimiter.

Add a new error for unexpected semi-colon before closing delimiter.

Previously, if a semi-colon is unexpectedly added before a closing ')', ']' or
'}', two errors and one note would emitted, and the parsing would get confused
to which scope it was in.  This change consumes the semi-colon, recovers
parsing better, and emits only one error with a fix-it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@237192 91177308-0d34-0410-b5e6-96231b3b80d8