Remove unnecessary braces

Author: chrisjbris

llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp

@@ -728,10 +728,9 @@ static bool buildVectorSupportsSourceMods(const SDNode *N) {
 
   assert(!N->use_empty());
 
-  for (const SDNode *U : N->users()) {
+  for (const SDNode *U : N->users())
     if (U->getOpcode() != ISD::BITCAST)
       return true;
-  }
 
   SDValue LHS = N->getOperand(0);
   SDValue RHS = N->getOperand(1);