[llvm] [Debuginfo] add debuginfod factory method (PR #154633)

[Daniel Thornburgh via llvm-commits]

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@@ -605,7 +608,20 @@ DebuginfodServer::DebuginfodServer(DebuginfodLog &Log,
           return;
         }
         streamFile(Request, *PathOrErr);
-      }));
+      });
+  if (Erre) {
+    return std::move(Erre);
+  }
+  return Error::success();
+}
+
+Expected<DebuginfodServer>
+DebuginfodServer::create(DebuginfodLog &Log, DebuginfodCollection &Collection) {
+  DebuginfodServer Serverd;
+  llvm::Error Err = Serverd.init(Log, Collection);
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mysterymath wrote:

`if (llvm::Error Err = ...)`

https://github.com/llvm/llvm-project/pull/154633