chore: adds a check that we have matching segments for path generation

Signed-off-by: Vincent Biret <[email protected]>

Author: baywet

src/Microsoft.OpenApi/Models/BaseOpenApiReference.cs

@@ -328,10 +328,11 @@ private static string ResolveRelativePointer(string nodeLocation, string relativ
             // Locate the first occurrence of relativeRef segments in the full path
             for (int i = 0; i <= nodeLocationSegments.Count - relativeSegments.Length; i++)
             {
-                if (relativeSegments.SequenceEqual(nodeLocationSegments.Skip(i).Take(relativeSegments.Length), StringComparer.Ordinal))
+                if (relativeSegments.SequenceEqual(nodeLocationSegments.Skip(i).Take(relativeSegments.Length), StringComparer.Ordinal) &&
+                    nodeLocationSegments.Take(i + relativeSegments.Length).ToArray() is {Length: > 0} matchingSegments)
                 {
                     // Trim to include just the matching segment chain
-                    return $"#/{string.Join("/", [.. nodeLocationSegments.Take(i + relativeSegments.Length)])}";
+                    return $"#/{string.Join("/", matchingSegments)}";
                 }
             }