Fix two issues in PDBASTParser
Fix two issues in PDBASTParser

- gcc warning about using binary or for or-ing two comparisons (a == b | a == c)
- llvm style prefers static functions to functions in an anonymous namespace

git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@342051 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb