clang/test/Tooling/clang-diff-ast.cpp: Satisfy thiscall.

clang/test/Tooling/clang-diff-ast.cpp: Satisfy thiscall.

  clang/test/Tooling/clang-diff-ast.cpp:45:12: error: expected string not found in input
   // CHECK: CXXConstructorDecl: X(void (char, int))
             ^
  <stdin>:43:25: note: scanning from here
   AccessSpecDecl: public(42)
                          ^
  <stdin>:44:2: note: possible intended match here
   CXXConstructorDecl: X(void (char, int) __attribute__((thiscall)))(43)
   ^

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@311270 91177308-0d34-0410-b5e6-96231b3b80d8