Properly curry parseInt

so additional arguments from commander are not passed through

bin/ncu

@@ -18,7 +18,7 @@ if (notifier.update && notifier.update.latest !== pkg.version) {
 program
     .description('[filter] is a list or regex of package names to check (all others will be ignored).')
     .usage('[options] [filter]')
-    .option('--concurrency <n>', 'max number of concurrent HTTP requests to npm registry (default: 8).', parseInt, 8)
+    .option('--concurrency <n>', 'max number of concurrent HTTP requests to npm registry (default: 8).', cint.partialAt(parseInt, 1, 10), 8)
     .option('--configFilePath <path>', 'rc config file path (default: directory of `packageFile` or ./ otherwise)')
     .option('--configFileName <path>', 'rc config file name (default: .ncurc.{json,yml,js})')
     .option('--cwd <path>', 'Used as current working directory for `spawn` in npm listing')