Fix uninitialized bool flag access in SanitizerArgs parser

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@172605 91177308-0d34-0410-b5e6-96231b3b80d8
Clang Format: Handle missing semicolon

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@172606 91177308-0d34-0410-b5e6-96231b3b80d8
Clang Format: A couple of tests for the trailing stuff case

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@172607 91177308-0d34-0410-b5e6-96231b3b80d8