[AsmParser] Fix inconsistent declaration parameter name

llvm-svn: 336879
diff --git a/llvm/lib/AsmParser/LLLexer.cpp b/llvm/lib/AsmParser/LLLexer.cpp
index 4370ece..da9855f 100644
--- a/llvm/lib/AsmParser/LLLexer.cpp
+++ b/llvm/lib/AsmParser/LLLexer.cpp
@@ -157,9 +157,9 @@
 // Lexer definition.
 //===----------------------------------------------------------------------===//
 
-LLLexer::LLLexer(StringRef StartBuf, SourceMgr &sm, SMDiagnostic &Err,
+LLLexer::LLLexer(StringRef StartBuf, SourceMgr &SM, SMDiagnostic &Err,
                  LLVMContext &C)
-    : CurBuf(StartBuf), ErrorInfo(Err), SM(sm), Context(C), APFloatVal(0.0),
+    : CurBuf(StartBuf), ErrorInfo(Err), SM(SM), Context(C), APFloatVal(0.0),
       IgnoreColonInIdentifiers(false) {
   CurPtr = CurBuf.begin();
 }