lint fixes (#14)

* lint fixes

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

util/router/runtime.go

@@ -192,7 +192,6 @@ func (p Pattern) Match(components []string, verb string) (map[string]string, err
 			components = append([]string{}, components...)
 			components[len(components)-1] += ":" + verb
 		}
-		verb = ""
 	}
 
 	var pos int

util/router/types.go

@@ -42,7 +42,7 @@ func (l literal) String() string {
 }
 
 func (v variable) String() string {
-	var segs []string
+	segs := make([]string, 0, len(v.segments))
 	for _, s := range v.segments {
 		segs = append(segs, s.String())
 	}
@@ -50,7 +50,7 @@ func (v variable) String() string {
 }
 
 func (t template) String() string {
-	var segs []string
+	segs := make([]string, 0, len(t.segments))
 	for _, s := range t.segments {
 		segs = append(segs, s.String())
 	}