MC: Clean up method names in MCContext.

The naming was a mish-mash of old and new style. Update to be consistent
with the new. NFC.

llvm-svn: 237594
diff --git a/llvm/tools/dsymutil/DwarfLinker.cpp b/llvm/tools/dsymutil/DwarfLinker.cpp
index b8fbf4d..e4046e7 100644
--- a/llvm/tools/dsymutil/DwarfLinker.cpp
+++ b/llvm/tools/dsymutil/DwarfLinker.cpp
@@ -770,8 +770,8 @@
                                          unsigned PointerSize) {
   // Switch to the section where the table will be emitted into.
   MS->SwitchSection(MC->getObjectFileInfo()->getDwarfLineSection());
-  MCSymbol *LineStartSym = MC->CreateTempSymbol();
-  MCSymbol *LineEndSym = MC->CreateTempSymbol();
+  MCSymbol *LineStartSym = MC->createTempSymbol();
+  MCSymbol *LineEndSym = MC->createTempSymbol();
 
   // The first 4 bytes is the total length of the information for this
   // compilation unit (not including these 4 bytes for the length).