Be gentle to MSVC. C++ is hard, after all.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99855 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/SSEDomainFix.cpp b/lib/Target/X86/SSEDomainFix.cpp
index 3e456c2..415c1e8 100644
--- a/lib/Target/X86/SSEDomainFix.cpp
+++ b/lib/Target/X86/SSEDomainFix.cpp
@@ -203,14 +203,15 @@
 /// Force register rx into domain.
 void SSEDomainFixPass::Force(int rx, unsigned domain) {
   hasLiveRegs = true;
-  if (DomainValue *dv = LiveRegs[rx]) {
+  DomainValue *dv;
+  if ((dv = LiveRegs[rx])) {
     if (dv->collapsed())
       dv->add(domain);
     else
       Collapse(dv, domain);
   } else {
     // Set up basic collapsed DomainValue
-    DomainValue *dv = Pool.Alloc();
+    dv = Pool.Alloc();
     dv->add(domain);
     SetLiveReg(rx, dv);
   }