NPE in BuildClasspathMojo when getResolvedDependencies returns null

[elharo]

BuildClasspathMojo.execute() at line 199-205:

Set<Artifact> artifacts = getResolvedDependencies(true);

if (artifacts == null || artifacts.isEmpty()) {
    getLog().info("No dependencies found.");
}

List<Artifact> artList = new ArrayList<>(artifacts);  // NPE if null

When getResolvedDependencies() returns null, the code logs "No dependencies found." but then falls through to new ArrayList<>(null), which throws NullPointerException. There is no return statement after the null/empty check.

If artifacts is empty (not null), execution continues normally and produces an empty classpath string, which is harmless but inconsistent.