NRE in GetBodyStartIndex

[jakebailey]

Microsoft.Python.Analysis.Analyzer.ScopeExtensions.GetBodyStartIndex(IScope) in Analysis\Ast\Impl\Extensions\ScopeExtensions.cs:line 31
Microsoft.Python.Analysis.Analyzer.ScopeExtensions.FindScope(IScope, IDocument, SourceLocation) in Analysis\Ast\Impl\Extensions\ScopeExtensions.cs:line 45
Microsoft.Python.LanguageServer.Completion.TopLevelCompletion.GetCompletions(Node, ScopeStatement, CompletionContext) in LanguageServer\Impl\Completion\TopLevelCompletion.cs:line 38
Microsoft.Python.LanguageServer.Completion.CompletionSource.GetCompletions(IDocumentAnalysis, SourceLocation) in LanguageServer\Impl\Completion\CompletionSource.cs:line 91
Microsoft.Python.LanguageServer.Implementation.Server.Completion(CompletionParams, CancellationToken) in E:\A\_work\594\s\src\LanguageServer\Impl\Implementati

scope.Node is null (the scope is not, or the NRE would have happened earlier in FindScope).

[jakebailey]

Reopening, this appears to still be happening in daily (which includes this PR).