Add a break to the end of case statement missed in r159501.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159502 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp
index 4a0271f..04ed80a 100644
--- a/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -2035,6 +2035,7 @@
       SDNode *RetVal = SelectGather(Node, Opc);
       if (RetVal)
         return RetVal;
+      break;
     }
     }
     break;