all: update repo to use the new error handling syntax (#8950)

vlib/v/pkgconfig/main.v

@@ -83,7 +83,7 @@ pub fn (mut m Main) run() ?string {
 	for arg in opt.args {
 		mut pcdep := load(arg, options) or {
 			if !opt.exists {
-				return error(err)
+				return err
 			}
 			continue
 		}

vlib/v/pkgconfig/pkgconfig.v

@@ -245,7 +245,7 @@ pub fn load(pkgname string, options Options) ?&PkgConfig {
 		options: options
 	}
 	pc.load_paths()
-	file := pc.resolve(pkgname) or { return error(err) }
+	file := pc.resolve(pkgname) or { return err }
 	if !pc.parse(file) {
 		return error('file "$file" could not be parsed')
 	}