Fix compiler error: init-statements in if/switch.

[jreiffers]

Fix formatting.

llvm/lib/Analysis/ScalarEvolution.cpp

case Instruction::Mul: {
             (U->getOpcode() == Instruction::Mul &&
              NewBO->Opcode != Instruction::Mul)) {
           Ops.push_back(BO->LHS);
           break;
         }
         // CreateSCEV calls getNoWrapFlagsFromUB, which under certain conditions
         // requires a SCEV for the LHS.
         if (NewBO->Op && (NewBO->IsNSW || NewBO->IsNUW)) {
-          if (auto *I = dyn_cast<Instruction>(NewBO->Op);
-              I && programUndefinedIfPoison(I)) {
+          auto *I = dyn_cast<Instruction>(NewBO->Op);
+          if (I && programUndefinedIfPoison(I)) {
             Ops.push_back(BO->LHS);
             break;
           }
         }
         BO = NewBO;
       } while (true);
       return nullptr;
     }