[fix-finder] Enable nullable annotations for GetGdbSymbols

[github-actions]

AI-generated fix. Produced by the nightly-fix-finder agentic workflow.

Problem

GetGdbSymbols was not opted into nullable reference type analysis. Its optional AdbTarget property and required MSBuild task properties therefore lacked compiler-checked nullability contracts.

Fix

Enabled nullable analysis in GetGdbSymbols.cs, marked AdbTarget nullable, initialized all [Required] string properties to non-null defaults, and removed the now-redundant constructor assignment.

Validation

• MSBUILD_ARGS='/p:AndroidSdkDirectory=/home/runner/android-toolchain/sdk /p:AndroidNdkDirectory=/home/runner/android-toolchain/ndk' ./build.sh Prepare — passed
• ./dotnet-local.sh build src/Xamarin.Android.Build.Debugging.Tasks/Xamarin.Android.Build.Debugging.Tasks.csproj -p:AndroidSdkDirectory=/home/runner/android-toolchain/sdk -p:AndroidNdkDirectory=/home/runner/android-toolchain/ndk -p:_AndroidTreatWarningsAsErrors=true --no-restore — passed with 0 warnings and 0 errors

Fix-finder metadata

• Script: 01-nullable-reference-types
• Score: 27/30 (actionability: 9, safety: 9, scope: 9)

Warning

Firewall blocked 1 domain

The following domain was blocked by the firewall during workflow execution:

• southcentralus0.in.applicationinsights.azure.com

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "southcentralus0.in.applicationinsights.azure.com"

See Network Configuration for more information.

Generated by Nightly Fix Finder · gpt56 · 107.4 AIC · ⌖ 36.6 AIC · ⊞ 23.7K · ◷