MC: Move getLoc() to MCAsmLexer().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108154 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/MCAsmLexer.cpp b/lib/MC/MCParser/MCAsmLexer.cpp
index e5b2955..dceece7 100644
--- a/lib/MC/MCParser/MCAsmLexer.cpp
+++ b/lib/MC/MCParser/MCAsmLexer.cpp
@@ -12,12 +12,16 @@
 
 using namespace llvm;
 
-MCAsmLexer::MCAsmLexer() : CurTok(AsmToken::Error, StringRef()) {
+MCAsmLexer::MCAsmLexer() : CurTok(AsmToken::Error, StringRef()), TokStart(0) {
 }
 
 MCAsmLexer::~MCAsmLexer() {
 }
 
+SMLoc MCAsmLexer::getLoc() const {
+  return SMLoc::getFromPointer(TokStart);
+}
+
 SMLoc AsmToken::getLoc() const {
   return SMLoc::getFromPointer(Str.data());
 }