Remove redundant (duplicated) check.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168293 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaStmt.cpp b/lib/Sema/SemaStmt.cpp
index f55174e..bad12e3 100644
--- a/lib/Sema/SemaStmt.cpp
+++ b/lib/Sema/SemaStmt.cpp
@@ -1149,7 +1149,7 @@
   assert(Cond && "ActOnDoStmt(): missing expression");
 
   ExprResult CondResult = CheckBooleanCondition(Cond, DoLoc);
-  if (CondResult.isInvalid() || CondResult.isInvalid())
+  if (CondResult.isInvalid())
     return StmtError();
   Cond = CondResult.take();