variable templates updated for PCH serialization... Still working on test cases...

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188249 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Serialization/ASTWriterDecl.cpp b/lib/Serialization/ASTWriterDecl.cpp
index 60acbc5..bb7fd1e 100644
--- a/lib/Serialization/ASTWriterDecl.cpp
+++ b/lib/Serialization/ASTWriterDecl.cpp
@@ -735,6 +735,7 @@
       D->getInitStyle() == VarDecl::CInit &&
       D->getInit() == 0 &&
       !isa<ParmVarDecl>(D) &&
+      !isa<VarTemplateSpecializationDecl>(D) &&
       !D->isConstexpr() &&
       !SpecInfo)
     AbbrevToUse = Writer.getDeclVarAbbrev();