fix doubled_tree_sitter_prefix in python binding (with null check)

[ScottRBK]

User description

The tree-sitter CLI scaffolding generated binding.c with a doubled prefix (tree_sitter_tree_sitter_vb_dotnet) because the repo name tree-sitter-vb-dotnet already contains the tree-sitter- prefix.

The actual grammar in parser.c export tree_sitter_vb_dotnet. This causes an ImportError: undefined symbol at runtime, making the Python package unusable.

Changes:

• Fix function name in binding.c to match parser.c export
• Add NULL check on the return value before wrapping in PyCapsule (following code ant bot nitpick :))

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CodeAnt-AI Description

Fix Python binding name and add null check for VB.NET grammar

What Changed

• The Python binding now uses the correct exported grammar symbol so importing the package no longer fails with an undefined symbol error
• If the VB.NET grammar fails to load, the module raises a clear RuntimeError instead of producing an invalid capsule or crashing

Impact

✅ Fixes ImportError on package import
✅ Clearer error when grammar fails to load
✅ Python VB.NET binding is now usable

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Nitpicks 🔍

🔒 No security issues identified

⚡ Recommended areas for review Symbol mismatch Ensure the declared function name tree_sitter_vb_dotnet exactly matches the exported symbol from the generated parser (parser.c). If the parser still exports a different name the Python import will fail at runtime with an undefined symbol.

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[ScottRBK]

Nitpicks 🔍

🔒 No security issues identified
⚡ Recommended areas for review

• Symbol mismatchEnsure the declared function name tree_sitter_vb_dotnet exactly matches the exported symbol from the generated parser (parser.c). If the parser still exports a different name the Python import will fail at runtime with an undefined symbol.

the symbols match and this is exactly what the change is for so should be fine for merge.