libclang/CXLoadedDiagnostic.cpp: Work around not to miss the string terminator on fixit.

FixIts might be exposed as C string via clang_getCString(), though the zero terminator is not allocated in CXLoadedDiagnosticSetImpl::makeString.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144379 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed