Fix the archive code so that it compiles in a stricter mode.

utils/archive/entry.c

Index: utils/archive/entry.c
diff --git a/utils/archive/entry.c b/utils/archive/entry.c
index 7e96145e0cbd390e2621136a1ccf6167d670e39d..81cc0186a13b8f686d04118255ed4998c971c6e7 100644
--- a/utils/archive/entry.c
+++ b/utils/archive/entry.c
@@ -156,14 +156,6 @@ void archiveEntrySetPathname(Dart_Port p, struct archive_entry* e,
   postSuccess(p, NULL);
 }
 
-void archiveEntrySetSourcepath(Dart_Port p, struct archive_entry* e,
-    Dart_CObject* request) {
-  Dart_CObject* value = getNullableStringArgument(p, request, 0);
-  if (value == NULL) return;
-  archive_entry_set_sourcepath(e, getNullableString(value));
-  postSuccess(p, NULL);
-}
-
 void archiveEntrySetSymlink(Dart_Port p, struct archive_entry* e,
     Dart_CObject* request) {
   Dart_CObject* value = getNullableStringArgument(p, request, 0);
@@ -192,7 +184,7 @@ void archiveEntrySetPerm(Dart_Port p, struct archive_entry* e,
     Dart_CObject* request) {
   Dart_CObject* value = getIntArgument(p, request, 0);
   if (value == NULL) return;
-  archive_entry_set_perm_mask(e, getInteger(value));
+  archive_entry_set_perm(e, getInteger(value));
   postSuccess(p, NULL);
 }
 
@@ -228,14 +220,6 @@ void archiveEntrySetFflagsClear(Dart_Port p, struct archive_entry* e,
   postSuccess(p, NULL);
 }
 
-void archiveEntrySetFflagsText(Dart_Port p, struct archive_entry* e,
-    Dart_CObject* request) {
-  Dart_CObject* value = getNullableStringArgument(p, request, 0);
-  if (value == NULL) return;
-  archive_entry_set_fflags_text(e, getNullableString(value));
-  postSuccess(p, NULL);
-}
-
 void archiveEntrySetFiletype(Dart_Port p, struct archive_entry* e,
     Dart_CObject* request) {
   Dart_CObject* value = getIntArgument(p, request, 0);