[NFC] [X86] Fix scan-build complaining

[pengfei]

Summary

Remove unused variable. This fixes bug:
https://bugs.llvm.org/show_bug.cgi?id=42526

Signed-off-by: pengfei <[e-mail]>

[RKSimon]

LGTM - cheers

cfe/trunk/lib/CodeGen/CGBuiltin.cpp

case X86::BI__builtin_ia32_vp2intersect_d_128: {
     case X86::BI__builtin_ia32_vp2intersect_d_128:
       ID = Intrinsic::x86_avx512_vp2intersect_d_128;
       break;
     }
 
     Value *Call = Builder.CreateCall(CGM.getIntrinsic(ID), {Ops[0], Ops[1]});
     Value *Result = Builder.CreateExtractValue(Call, 0);
     Result = EmitX86MaskedCompareResult(*this, Result, NumElts, nullptr);
-    Value *Store = Builder.CreateDefaultAlignedStore(Result, Ops[2]);
+    Builder.CreateDefaultAlignedStore(Result, Ops[2]);
 
     Result = Builder.CreateExtractValue(Call, 1);
     Result = EmitX86MaskedCompareResult(*this, Result, NumElts, nullptr);
-    Store = Builder.CreateDefaultAlignedStore(Result, Ops[3]);
-    return Store;
+    return Builder.CreateDefaultAlignedStore(Result, Ops[3]);
   }
 
   case X86::BI__builtin_ia32_vpmultishiftqb128:
   case X86::BI__builtin_ia32_vpmultishiftqb256:
   case X86::BI__builtin_ia32_vpmultishiftqb512: {
     Intrinsic::ID ID;
     switch (BuiltinID) {
     default: llvm_unreachable("Unsupported intrinsic!");