vuln: Fix GO-2025-3770 vulnerability

vendor/github.com/go-chi/chi/v5/context.go

@@ -60,7 +60,7 @@ type Context struct {
 	URLParams RouteParams
 
 	// Route parameters matched for the current sub-router. It is
-	// intentionally unexported so it cant be tampered.
+	// intentionally unexported so it can't be tampered.
 	routeParams RouteParams
 
 	// The endpoint routing pattern that matched the request URI path
@@ -74,9 +74,8 @@ type Context struct {
 	// patterns across a stack of sub-routers.
 	RoutePatterns []string
 
-	// methodNotAllowed hint
-	methodNotAllowed bool
 	methodsAllowed   []methodTyp // allowed methods in case of a 405
+	methodNotAllowed bool
 }
 
 // Reset a routing context to its initial state.
@@ -92,6 +91,7 @@ func (x *Context) Reset() {
 	x.routeParams.Keys = x.routeParams.Keys[:0]
 	x.routeParams.Values = x.routeParams.Values[:0]
 	x.methodNotAllowed = false
+	x.methodsAllowed = x.methodsAllowed[:0]
 	x.parentCtx = nil
 }
 
@@ -109,22 +109,27 @@ func (x *Context) URLParam(key string) string {
 // RoutePattern builds the routing pattern string for the particular
 // request, at the particular point during routing. This means, the value
 // will change throughout the execution of a request in a router. That is
-// why its advised to only use this value after calling the next handler.
+// why it's advised to only use this value after calling the next handler.
 //
 // For example,
 //
-//   func Instrument(next http.Handler) http.Handler {
-//     return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-//       next.ServeHTTP(w, r)
-//       routePattern := chi.RouteContext(r.Context()).RoutePattern()
-//       measure(w, r, routePattern)
-//   	 })
-//   }
+//	func Instrument(next http.Handler) http.Handler {
+//		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+//			next.ServeHTTP(w, r)
+//			routePattern := chi.RouteContext(r.Context()).RoutePattern()
+//			measure(w, r, routePattern)
+//		})
+//	}
 func (x *Context) RoutePattern() string {
+	if x == nil {
+		return ""
+	}
 	routePattern := strings.Join(x.RoutePatterns, "")
 	routePattern = replaceWildcards(routePattern)
-	routePattern = strings.TrimSuffix(routePattern, "//")
-	routePattern = strings.TrimSuffix(routePattern, "/")
+	if routePattern != "/" {
+		routePattern = strings.TrimSuffix(routePattern, "//")
+		routePattern = strings.TrimSuffix(routePattern, "/")
+	}
 	return routePattern
 }