Hafiz Abid Qadeer 7f2f0ccb0a Replace sprintf with snprintf to avoid a crash. ...

During testing -data-list-register-values, I saw a crash here due to buffer overflow.
This commit should fix the crash. There is still problem with printing 1-byte register
in some cases that I will fix separately.

No regression on MI test cases.

llvm-svn: 235991

2015-04-28 14:16:00 +00:00

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