DebugInfo: Remove DIArray and DITypeArray typedefs

Remove the `DIArray` and `DITypeArray` typedefs, preferring the
underlying types (`DebugNodeArray` and `MDTypeRefArray`, respectively).

llvm-svn: 235413
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index e661ddc..dbaf1c6 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -570,7 +570,7 @@
   DIE &ScopeDIE = updateSubprogramScopeDIE(Sub);
 
   // If this is a variadic function, add an unspecified parameter.
-  DITypeArray FnArgs = Sub->getType()->getTypeArray();
+  MDTypeRefArray FnArgs = Sub->getType()->getTypeArray();
 
   // Collect lexical scope children first.
   // ObjectPointer might be a local (non-argument) local variable if it's a