LLVMSymbolize.cpp: Fix build. Triple::ArchType is not a namespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186494 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-symbolizer/LLVMSymbolize.cpp b/tools/llvm-symbolizer/LLVMSymbolize.cpp
index 4f6e0cf..0346fb2 100644
--- a/tools/llvm-symbolizer/LLVMSymbolize.cpp
+++ b/tools/llvm-symbolizer/LLVMSymbolize.cpp
@@ -282,7 +282,7 @@
   // Verify that substring after colon form a valid arch name.
   if (ColonPos != std::string::npos) {
     std::string ArchStr = ModuleName.substr(ColonPos + 1);
-    if (Triple(ArchStr).getArch() != Triple::ArchType::UnknownArch) {
+    if (Triple(ArchStr).getArch() != Triple::UnknownArch) {
       BinaryName = ModuleName.substr(0, ColonPos);
       ArchName = ArchStr;
     }