[x86] fix formatting; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289476 91177308-0d34-0410-b5e6-96231b3b80d8

Author: rotateright

lib/Target/X86/X86ISelLowering.cpp

@@ -12000,7 +12000,7 @@ static SDValue lowerV4F64VectorShuffle(const SDLoc &DL, ArrayRef<int> Mask,
   // the results into the target lanes.
   if (SDValue V = lowerShuffleAsRepeatedMaskAndLanePermute(
           DL, MVT::v4f64, V1, V2, Mask, Subtarget, DAG))
-  return V;
+    return V;
 
   // Try to simplify this by merging 128-bit lanes to enable a lane-based
   // shuffle. However, if we have AVX2 and either inputs are already in place,