Fix darwin builds (#24)

* Update wownero_libwallet2_api_c.exp

.github/workflows/dart_bindings.yaml

@@ -27,12 +27,31 @@ jobs:
           else 
             exit 1
           fi
+      - uses: actions/github-script@v7
+        continue-on-error: true
+        id: get_issue_number
+        with:
+          script: |
+            if (context.issue.number) {
+              // Return issue number if present
+              return context.issue.number;
+            } else {
+              // Otherwise return issue number from commit
+              return (
+                await github.rest.repos.listPullRequestsAssociatedWithCommit({
+                  commit_sha: context.sha,
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                })
+              ).data[0].number;
+            }
+          result-encoding: string
       - name: Create or update comment
         continue-on-error: true
         if: failure()
         uses: peter-evans/create-or-update-comment@v4
         with:
-          issue-number: ${{ github.event.pull_request.number }}
+          issue-number: ${{steps.get_issue_number.outputs.result}}
           body: |
             Invalid bindings found in monero.dart, make sure to run `./impls/monero.dart/update_bindings.sh`