Refactor variables unused under non-assert builds.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148229 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index e2a9404..39161ea 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -6861,7 +6861,6 @@
     return vType;
 
   QualType LHSType = LHS.get()->getType();
-  QualType RHSType = RHS.get()->getType();
 
   // If AltiVec, the comparison results in a numeric type, i.e.
   // bool for C++, int for C
@@ -6886,7 +6885,7 @@
 
   // Check for comparisons of floating point operands using != and ==.
   if (!IsRelational && LHSType->hasFloatingRepresentation()) {
-    assert (RHSType->hasFloatingRepresentation());
+    assert (RHS.get()->getType()->hasFloatingRepresentation());
     CheckFloatComparison(Loc, LHS.get(), RHS.get());
   }