Restyle Fix casting in TLVReader::Get to be safe. #3118
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Casts of out-of-range values to signed integer types are not defined by the C or C++ standards, but this code was expecting them to act as a cast to the corresponding-sized unsigned integer type, then the "undoing" of a signed-to-unsigned cast. We instead introduce a CastToSigned() function that explicitly and safely undoes a signed-to-unsigned cast and use that in TLVReader::Get to eliminate the implementation-defined behavior dependence.
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A duplicate of #3099 with additional commits that automatically address
incorrect style, created by Restyled.
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repository, we are unable to create a Pull Request branching from it with only
the style fixes.
The following Restylers made fixes:
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