When generating the Attribute dumper code, do not dead-initialize MoreChildren

No functional change. This will cleanup a bunch of scan-build warnings.

llvm-svn: 204529
diff --git a/clang/utils/TableGen/ClangAttrEmitter.cpp b/clang/utils/TableGen/ClangAttrEmitter.cpp
index d4f8d57..a0749eb 100644
--- a/clang/utils/TableGen/ClangAttrEmitter.cpp
+++ b/clang/utils/TableGen/ClangAttrEmitter.cpp
@@ -2522,7 +2522,7 @@
 
       // Code for detecting the last child.
       OS << "    bool OldMoreChildren = hasMoreChildren();\n";
-      OS << "    bool MoreChildren = OldMoreChildren;\n";     
+      OS << "    bool MoreChildren;\n";
 
       for (auto AI = Args.begin(), AE = Args.end(); AI != AE; ++AI) {
         // More code for detecting the last child.