ns2_frgre: Fix missing break statement for recv from IPV6

Change-Id: I549277483fee55f390e0b5ae1dafec6f2d68eae7
Fixes: CID#215836
diff --git a/src/gb/gprs_ns2_frgre.c b/src/gb/gprs_ns2_frgre.c
index 625d05c..86f0921 100644
--- a/src/gb/gprs_ns2_frgre.c
+++ b/src/gb/gprs_ns2_frgre.c
@@ -314,6 +314,7 @@
 		break;
 	case AF_INET6:
 		ip46hdr = sizeof(struct ip6_hdr);
+		break;
 	default:
 		*error = -EIO;
 		goto out_err;