WalkUtils: fix indentation

Author: eeckstein

SwiftCompilerSources/Sources/Optimizer/Utilities/WalkUtils.swift

@@ -349,8 +349,8 @@ extension ValueDefUseWalker {
         return unmatchedPath(value: operand, path: path)
       }
     case is BeginBorrowInst, is CopyValueInst, is MoveValueInst,
-      is UpcastInst, is UncheckedRefCastInst, is EndCOWMutationInst, is EndInitLetRefInst,
-      is RefToBridgeObjectInst, is BridgeObjectToRefInst, is MarkUnresolvedNonCopyableValueInst:
+         is UpcastInst, is UncheckedRefCastInst, is EndCOWMutationInst, is EndInitLetRefInst,
+         is RefToBridgeObjectInst, is BridgeObjectToRefInst, is MarkUnresolvedNonCopyableValueInst:
       return walkDownUses(ofValue: (instruction as! SingleValueInstruction), path: path)
     case let beginDealloc as BeginDeallocRefInst:
       if operand.index == 0 {
@@ -660,9 +660,9 @@ extension ValueUseDefWalker {
     case let oer as OpenExistentialRefInst:
       return walkUp(value: oer.existential, path: path.push(.existential, index: 0))
     case is BeginBorrowInst, is CopyValueInst, is MoveValueInst,
-      is UpcastInst, is UncheckedRefCastInst, is EndCOWMutationInst, is EndInitLetRefInst,
-      is BeginDeallocRefInst,
-      is RefToBridgeObjectInst, is BridgeObjectToRefInst, is MarkUnresolvedNonCopyableValueInst:
+         is UpcastInst, is UncheckedRefCastInst, is EndCOWMutationInst, is EndInitLetRefInst,
+         is BeginDeallocRefInst,
+         is RefToBridgeObjectInst, is BridgeObjectToRefInst, is MarkUnresolvedNonCopyableValueInst:
       return walkUp(value: (def as! Instruction).operands[0].value, path: path)
     case let arg as BlockArgument:
       if arg.isPhiArgument {