Fix uninitialized variable warning.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74457 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-mc/AsmParser.cpp b/tools/llvm-mc/AsmParser.cpp
index 2248b04..9121797 100644
--- a/tools/llvm-mc/AsmParser.cpp
+++ b/tools/llvm-mc/AsmParser.cpp
@@ -218,7 +218,7 @@
 /// Res contains the LHS of the expression on input.
 bool AsmParser::ParseBinOpRHS(unsigned Precedence, AsmExpr *&Res) {
   while (1) {
-    AsmBinaryExpr::Opcode Kind;
+    AsmBinaryExpr::Opcode Kind = AsmBinaryExpr::Add;
     unsigned TokPrec = getBinOpPrecedence(Lexer.getKind(), Kind);
     
     // If the next token is lower precedence than we are allowed to eat, return