ScopValidator: smax expressions are no parameters

This fixes PR18155 which is a regression introduced in 152913.

llvm-svn: 196827
diff --git a/polly/lib/Support/SCEVValidator.cpp b/polly/lib/Support/SCEVValidator.cpp
index 19ca7d4..2434c06 100644
--- a/polly/lib/Support/SCEVValidator.cpp
+++ b/polly/lib/Support/SCEVValidator.cpp
@@ -297,7 +297,7 @@
   }
 
   class ValidatorResult visitSMaxExpr(const SCEVSMaxExpr *Expr) {
-    ValidatorResult Return(SCEVType::INT, Expr);
+    ValidatorResult Return(SCEVType::INT);
 
     for (int i = 0, e = Expr->getNumOperands(); i < e; ++i) {
       ValidatorResult Op = visit(Expr->getOperand(i));