Add obviously missing "break".  Noticed by Andrey Karpov with
the PVS-studio tool.

llvm-svn: 136878
diff --git a/llvm/lib/Target/X86/InstPrinter/X86InstComments.cpp b/llvm/lib/Target/X86/InstPrinter/X86InstComments.cpp
index 5bf93c7..cb4996b 100644
--- a/llvm/lib/Target/X86/InstPrinter/X86InstComments.cpp
+++ b/llvm/lib/Target/X86/InstPrinter/X86InstComments.cpp
@@ -209,6 +209,7 @@
     DecodeVPERMILPSMask(4, MI->getOperand(2).getImm(),
                         ShuffleMask);
     Src1Name = getRegName(MI->getOperand(0).getReg());
+    break;
   case X86::VPERMILPSYri:
     DecodeVPERMILPSMask(8, MI->getOperand(2).getImm(),
                         ShuffleMask);