merge 8b703e0: parser/digest: use next_sibling_hdr() instead of hand-rolling it

it's already included into 3.3.3, so remove the patch from sipwise_patches

parser/digest/digest.c

@@ -303,12 +303,7 @@ int find_credentials(struct sip_msg* msg, str* realm,
 			LOG(L_ERR, "auth:find_credentials: Error while parsing headers\n");
 			return -4;
 		} else {
-			ptr = ptr->next;
-			while (ptr) {
-				if (ptr->type == hftype)
-					break;
-				ptr = ptr->next;
-			}
+			ptr = next_sibling_hdr(ptr);
 			if (!ptr)
 				break;
 		}

sipwise_patches/12211_fix_digest_parser.patch

@@ -1,37 +0,0 @@
-diff --git a/parser/digest/digest.c b/parser/digest/digest.c
-index 66400b5..2aef8e1 100644
---- a/parser/digest/digest.c
-+++ b/parser/digest/digest.c
-@@ -241,7 +241,7 @@ int get_authorized_cred(struct hdr_field* _f, struct hdr_field** _h)
- int find_credentials(struct sip_msg* msg, str* realm,
- 		     hdr_types_t hftype, struct hdr_field** hdr)
- {
--	struct hdr_field** hook, *ptr, *prev;
-+	struct hdr_field** hook, *ptr;
- 	hdr_flags_t hdr_flags;
- 	int res;
- 	str* r;
-@@ -299,15 +299,18 @@ int find_credentials(struct sip_msg* msg, str* realm,
- 			}
- 		}
- 
--		prev = ptr;
- 		if (parse_headers(msg, hdr_flags, 1) == -1) {
- 			LOG(L_ERR, "auth:find_credentials: Error while parsing headers\n");
- 			return -4;
- 		} else {
--			if (prev != msg->last_header) {
--				if (msg->last_header->type == hftype) ptr = msg->last_header;
--				else break;
--			} else break;
-+			ptr = ptr->next;
-+			while (ptr) {
-+				if (ptr->type == hftype)
-+					break;
-+				ptr = ptr->next;
-+			}
-+			if (!ptr)
-+				break;
- 		}
- 	}
-