Fix some redundant errors by changing CXXScopeSpec::isSet calls into
isNotEmpty calls.

llvm-svn: 100722
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 3556057..590a014 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -70,7 +70,7 @@
     QualType ObjectType = QualType::getFromOpaquePtr(ObjectTypePtr);
     if (ObjectType->isRecordType())
       LookupCtx = computeDeclContext(ObjectType);
-  } else if (SS && SS->isSet()) {
+  } else if (SS && SS->isNotEmpty()) {
     LookupCtx = computeDeclContext(*SS, false);
 
     if (!LookupCtx) {