ZipException throw by SDK's JarFile constructor may lack file name

We get the following (non fatal) error. The attached patch helps us.

[INFO] Generating "Dependencies" report.
[ERROR] IOException: error in opening zip file
java.util.zip.ZipException: error in opening zip file
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:203)
at java.util.jar.JarFile.<init>(JarFile.java:132)
at java.util.jar.JarFile.<init>(JarFile.java:97)
at org.apache.maven.shared.jar.JarAnalyzer.<init>(JarAnalyzer.java:102)
at org.apache.maven.report.projectinfo.dependencies.Dependencies.getJarDependencyDetails(Dependencies.java:282)
at org.apache.maven.report.projectinfo.dependencies.renderer.DependenciesRenderer.hasSealed(DependenciesRenderer.java:1278)
at org.apache.maven.report.projectinfo.dependencies.renderer.DependenciesRenderer.renderSectionDependencyFileDetails(DependenciesRenderer.java:423)
at org.apache.maven.report.projectinfo.dependencies.renderer.DependenciesRenderer.renderBody(DependenciesRenderer.java:268)
at org.apache.maven.reporting.AbstractMavenReportRenderer.render(AbstractMavenReportRenderer.java:65)
at org.apache.maven.report.projectinfo.DependenciesReport.executeReport(DependenciesReport.java:239)
at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:90)
at org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:139)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:269)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:101)
at org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:129)
at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:96)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:499)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:478)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
[INFO] Generating "changelog" report.
[INFO] Generating "dev-activity" report.
[INFO] Generating "file-activity" report.