MC: Tidy up LOH naming a bit. NFC.

llvm-svn: 238800
diff --git a/llvm/lib/MC/MCLinkerOptimizationHint.cpp b/llvm/lib/MC/MCLinkerOptimizationHint.cpp
index 2c9c67c..5f6a579 100644
--- a/llvm/lib/MC/MCLinkerOptimizationHint.cpp
+++ b/llvm/lib/MC/MCLinkerOptimizationHint.cpp
@@ -22,7 +22,7 @@
 // - Its argN.
 // <arg1> to <argN> are absolute addresses in the object file, i.e.,
 // relative addresses from the beginning of the object file.
-void MCLOHDirective::Emit_impl(raw_ostream &OutStream,
+void MCLOHDirective::emit_impl(raw_ostream &OutStream,
                                const MachObjectWriter &ObjWriter,
                                const MCAsmLayout &Layout) const {
   encodeULEB128(Kind, OutStream);