cli: fix ParseExtendedCommunities() to correctly parse action 'accept'

close #1049

Signed-off-by: ISHIDA Wataru <[email protected]>

gobgp/cmd/global.go

@@ -254,9 +254,6 @@ func ParseExtendedCommunities(input string) ([]bgp.ExtendedCommunityInterface, e
 	for i, idx := range idxs {
 		var a []string
 		f := ExtCommParserMap[idx.t]
-		if f == nil {
-			continue
-		}
 		if i < len(idxs)-1 {
 			a = args[:idxs[i+1].i-idx.i]
 			args = args[(idxs[i+1].i - idx.i):]
@@ -264,6 +261,9 @@ func ParseExtendedCommunities(input string) ([]bgp.ExtendedCommunityInterface, e
 			a = args
 			args = nil
 		}
+		if f == nil {
+			continue
+		}
 		ext, err := f(a)
 		if err != nil {
 			return nil, err