[llvm] [CommandLine][NFCI] Do not add 'All' to 'RegisteredSubCommands' (PR #77041)

[Simon Pilgrim via llvm-commits]

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@@ -532,8 +527,7 @@ SubCommand *CommandLineParser::LookupSubCommand(StringRef Name,
   // Find a subcommand with the edit distance == 1.
   SubCommand *NearestMatch = nullptr;
   for (auto *S : RegisteredSubCommands) {
-    if (S == &SubCommand::getAll())
-      continue;
+    assert(S != &SubCommand::getAll());
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RKSimon wrote:

(style) assertion message

https://github.com/llvm/llvm-project/pull/77041