Ignore git error on repository root detection. (#1413)

Author: isoos

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## 0.22.14
 
+- Fixes issue with local analysis without git repository root.
 - Accept `logger` in `PackageAnalyzer.inspectDir` method.
 
 ## 0.22.13

lib/src/package_analyzer.dart

@@ -242,12 +242,14 @@ class PackageAnalyzer {
 }
 
 Future<String?> _detectGitRoot(String packageDir) async {
-  final pr = await runGitIsolated(
-    ['rev-parse', '--show-toplevel'],
-    workingDirectory: packageDir,
-  );
-  if (pr.exitCode == 0) {
+  try {
+    final pr = await runGitIsolated(
+      ['rev-parse', '--show-toplevel'],
+      workingDirectory: packageDir,
+    );
     return pr.stdout.asString.trim();
+  } on GitToolException catch (_) {
+    // not in a git directory (or git is broken) - ignore exception
   }
   return null;
 }