[cfe-commits] Fix clang warning "adding bool to string".

[Sean Silva]

Fixes the following warning from Clang:

/home/sean/pg/others/llvm/source/tools/clang/lib/Rewrite/RewriteMacros.cpp:170:40:
warning: adding 'bool' to a string does not append to the string
[-Wstring-plus-int]
      RB.InsertTextAfter(RawOffs, " /*"+HasSpace);
                                  ~~~~~^~~~~~~~~
/home/sean/pg/others/llvm/source/tools/clang/lib/Rewrite/RewriteMacros.cpp:170:40:
note: use array indexing to silence this warning
      RB.InsertTextAfter(RawOffs, " /*"+HasSpace);
                                       ^
                                  &    [        ]
1 warning generated.

--Sean Silva
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