Build Failure

Builds using -Werror are failing again:

[off-dbg] : [llvm] cc1plus: warnings being treated as errors
[off-dbg] : [llvm] /ptmp/dag/llvm/official/llvm/lib/Support/APInt.cpp: In function 'unsigned int getDigit(char, uint8_t)':
[off-dbg] : [llvm] /ptmp/dag/llvm/official/llvm/lib/Support/APInt.cpp:57: error: comparison between signed and unsigned integer expressions
[off-dbg] : [llvm] /ptmp/dag/llvm/official/llvm/lib/Support/APInt.cpp:61: error: comparison between signed and unsigned integer expressions

Looks to be:

dcd99962 lib/Support/APInt.cpp (Douglas Gregor 2011-09-14 15:54:46 +0000 57) if (r <= radix-11)

139695 dgregor if (r <= radix-11)