Fix ClasspathEntry.validateLibraryContents() not reporting broken link

Commit 5450463 added checks for
classpath entries, but the check was incomplete. It is possible to set
classpath with broken library link without any error.

Removed extra check for Messages.status_IOException in the
ClasspathEntry.validateLibraryContents(). Any exception during
validation of a library is a problem of that library.

Author: iloveeclipse

org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/model/ModuleBuilderTests.java

@@ -7266,7 +7266,12 @@ public void testBug540904() throws CoreException, IOException {
 			addLibraryEntry(p2, file.getFullPath(), false);
 			getWorkspace().build(IncrementalProjectBuilder.FULL_BUILD, null);
 			IMarker[] markers = p2.getProject().findMarkers(null, true, IResource.DEPTH_INFINITE);
-			assertMarkers("Unexpected markers", "", markers);
+			assertMarkers(
+					"Should see one marker for missing jar",
+					"""
+					Archive for required library: 'link.jar' in project 'Bug540904' cannot be read or is not a valid ZIP file
+					The project cannot be built until build path errors are resolved""",
+					markers);
 		} finally {
 			this.deleteProject("Bug540904");
 		}

org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/ClasspathEntry.java

@@ -2548,11 +2548,9 @@ private static IJavaModelStatus validateLibraryContents(IPath path, IJavaProject
 		try {
 			manager.verifyArchiveContent(path);
 		} catch (CoreException e) {
-			if (e.getStatus().getMessage() == Messages.status_IOException) {
-				return new JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH, Messages.bind(
-						Messages.classpath_archiveReadError,
-						new String[] {entryPathMsg, project.getElementName()}));
-			}
+			return new JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH, Messages.bind(
+					Messages.classpath_archiveReadError,
+					new String[] {entryPathMsg, project.getElementName()}));
 		}
 		return JavaModelStatus.VERIFIED_OK;
 	}