Silence gcc warnings.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146847 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseExprCXX.cpp b/lib/Parse/ParseExprCXX.cpp
index 2e0b6a5..fff68b5 100644
--- a/lib/Parse/ParseExprCXX.cpp
+++ b/lib/Parse/ParseExprCXX.cpp
@@ -1022,7 +1022,7 @@
 
   if (Tok.is(tok::kw_decltype) && !FirstTypeName.isValid() && SS.isEmpty()) {
     DeclSpec DS(AttrFactory);
-    SourceLocation EndLoc = ParseDecltypeSpecifier(DS);
+    ParseDecltypeSpecifier(DS);
     if (DS.getTypeSpecType() == TST_error)
       return ExprError();
     return Actions.ActOnPseudoDestructorExpr(getCurScope(), Base, OpLoc,