[X86] Directly call isShuffleFoldableLoad (NFC)

We don't need a lambda here.

Author: kazutakahirata

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -42914,7 +42914,7 @@ static SDValue combineTargetShuffle(SDValue N, const SDLoc &DL,
           (SubOps.size() == 2 || (SubOps[2].isUndef() && SubOps[3].isUndef())))
         return SDValue();
       // Bail if any subops would have folded into the concat.
-      if (any_of(SubOps, [](SDValue Op) { return isShuffleFoldableLoad(Op); }))
+      if (any_of(SubOps, isShuffleFoldableLoad))
         return SDValue();
       // Concat 4x128 back to 2x256.
       if (SubOps.size() == 4) {