Simplify validation condition for manifest paths

Replace the intermediate boolean variable with a single inline condition
that checks file existence and path validation in one expression.

Author: Artur-

spring-core/src/main/java/org/springframework/core/io/support/PathMatchingResourcePatternResolver.java

@@ -634,11 +634,8 @@ private Set<ClassPathManifestEntry> getClassPathManifestEntriesFromJar(File jar)
 
 					// For relative paths, enforce security check (must be under parent)
 					// For absolute paths, just verify file exists (matching JVM behavior)
-					boolean isValid = pathFile.isAbsolute() ?
-							candidate.isFile() :
-							(candidate.isFile() && candidate.getCanonicalPath().contains(parent.getCanonicalPath()));
-
-					if (isValid) {
+					if (candidate.isFile() &&
+							(pathFile.isAbsolute() || candidate.getCanonicalPath().contains(parent.getCanonicalPath()))) {
 						manifestEntries.add(ClassPathManifestEntry.of(candidate, this.useCaches));
 					}
 				}