remove a dead assignment. The variables are set just right after. Found by scan-build http://buildd-clang.debian.net/scan-build/

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192061 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TargetInfo.cpp b/lib/CodeGen/TargetInfo.cpp
index 115593a..9ad17a4 100644
--- a/lib/CodeGen/TargetInfo.cpp
+++ b/lib/CodeGen/TargetInfo.cpp
@@ -1695,7 +1695,7 @@
 
         uint64_t EB_Lo = Offset / 64;
         uint64_t EB_Hi = (Offset + Size - 1) / 64;
-        FieldLo = FieldHi = NoClass;
+
         if (EB_Lo) {
           assert(EB_Hi == EB_Lo && "Invalid classification, type > 16 bytes.");
           FieldLo = NoClass;