CFKnownLocations // Release username when should.

Author: ShikiSuen

Sources/CoreFoundation/CFKnownLocations.c

@@ -99,7 +99,9 @@ CFURLRef _Nullable _CFKnownLocationCreatePreferencesURLForUser(CFKnownLocationUs
             username = CFGetUserName();
             // The above API returns a non-NULL CFStringRef. The failed result is an empty string.
             // We need to check for that case and fall through to the next case.
-            if (!CFEqual(username, CFSTR(""))) {
+            Boolean isEmpty = CFEqual(username, CFSTR(""));
+            CFRelease(username);
+            if (!isEmpty) {
                 break;
             }
             // fallthrough.