Writing to a struct passed by value is pointless. Remove dead code.

- free(NULL) is a nop anyway.
- if someone thinks calling clang_disposeString twice should be legal
  please change the method to take a pointer.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86568 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed