[clang] Fixing windows buildbot after D61552

[Tyker]

Summary

original review : https://reviews.llvm.org/D61552

build bot faillure : http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/110

this adds a missing definition of cxxDeductionGuideDecl.
surprisingly it was still working on linux with out it.

i will commit it to fix build bot as soon as possible.

cfe/trunk/lib/ASTMatchers/ASTMatchersInternal.cpp

 const internal::VariadicDynCastAllOfMatcher<Decl, CXXDestructorDecl>
     cxxDestructorDecl;
 const internal::VariadicDynCastAllOfMatcher<Decl, EnumDecl> enumDecl;
 const internal::VariadicDynCastAllOfMatcher<Decl, EnumConstantDecl>
     enumConstantDecl;
 const internal::VariadicDynCastAllOfMatcher<Decl, CXXMethodDecl> cxxMethodDecl;
 const internal::VariadicDynCastAllOfMatcher<Decl, CXXConversionDecl>
     cxxConversionDecl;
+const internal::VariadicDynCastAllOfMatcher<Decl, CXXDeductionGuideDecl>
+    cxxDeductionGuideDecl;
 const internal::VariadicDynCastAllOfMatcher<Decl, VarDecl> varDecl;
 const internal::VariadicDynCastAllOfMatcher<Decl, FieldDecl> fieldDecl;
 const internal::VariadicDynCastAllOfMatcher<Decl, IndirectFieldDecl>
     indirectFieldDecl;
 const internal::VariadicDynCastAllOfMatcher<Decl, FunctionDecl> functionDecl;
 const internal::VariadicDynCastAllOfMatcher<Decl, FunctionTemplateDecl>
     functionTemplateDecl;
 const internal::VariadicDynCastAllOfMatcher<Decl, FriendDecl> friendDecl;