Silencing an MSVC warning about comparing signed and unsigned values.

llvm-svn: 183682
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
index d83567c..679d3c4 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
@@ -461,7 +461,7 @@
   const MCRegisterInfo &MRI = getContext().getRegisterInfo();
   for (size_t i = 0; i < RegList.size(); ++i) {
     unsigned Reg = MRI.getEncodingValue(RegList[i]);
-    assert(Reg < (IsVector ? 32 : 16) && "Register out of range");
+    assert(Reg < (IsVector ? 32U : 16U) && "Register out of range");
     unsigned Bit = (1u << Reg);
     if ((Mask & Bit) == 0) {
       Mask |= Bit;