Fix error logged when repos qs is empty (#9591)

* Fix error logged when repos qs is empty

* Update routers/user/home.go

Co-Authored-By: Lauris BH <lauris@nix.lv>

Co-authored-by: techknowlogick <matti@mdranta.net>
Co-authored-by: Lauris BH <lauris@nix.lv>

routers/user/home.go

@@ -389,6 +389,7 @@ func Issues(ctx *context.Context) {
 
 	reposQuery := ctx.Query("repos")
 	var repoIDs []int64
+	if len(reposQuery) != 0 {
 		if issueReposQueryPattern.MatchString(reposQuery) {
 			// remove "[" and "]" from string
 			reposQuery = reposQuery[1 : len(reposQuery)-1]
@@ -405,6 +406,7 @@ func Issues(ctx *context.Context) {
 		} else {
 			log.Error("issueReposQueryPattern not match with query")
 		}
+	}
 
 	isShowClosed := ctx.Query("state") == "closed"