Fix the crash bug

Author: greatriver

source/hdtd/document.c

@@ -62,8 +62,6 @@ hd_open_document(hd_context *ctx, const char *filename)
     int i, score;
     int best_i, best_score;
     hd_document_handler_context *dc;
-    hd_stream *file;
-    hd_document *doc;
 
     if (filename == NULL)
         hd_throw(ctx, HD_ERROR_GENERIC, "no document to open");

source/pdf/pdf-xref.c

@@ -932,10 +932,10 @@ pdf_load_object(hd_context *ctx, pdf_document *doc, int num)
 {
     pdf_xref_entry *entry = pdf_cache_object(ctx, doc, num);
     //assert(entry->obj != NULL);
-	if (entry->obj != NULL)
-    	return pdf_keep_obj(ctx, entry->obj);
-	else
-		return NULL;
+	if (entry->obj == NULL)
+        hd_throw(ctx, HD_ERROR_GENERIC, "pdf_load_object is NULL");
+
+    return pdf_keep_obj(ctx, entry->obj);
 }
 
 static void
@@ -1042,12 +1042,14 @@ pdf_init_document(hd_context *ctx, pdf_document *doc)
                 hd_try(ctx)
                 {
                     dict = pdf_load_object(ctx, doc, i);
-					if (dict == NULL)
-						hd_throw(ctx, HD_ERROR_GENERIC, "ignoring broken object (%d 0 R)", i);
+					/*if (dict == NULL)
+						hd_throw(ctx, HD_ERROR_GENERIC, "ignoring broken object (%d 0 R)", i);*/
                 }
                 hd_catch(ctx)
                 {
-                    hd_rethrow(ctx);
+                    hd_rethrow_if(ctx, HD_ERROR_TRYLATER);
+                    hd_warn(ctx, "ignoring broken object (%d 0 R)", i);
+                    continue;
                 }
 
                 if (!hasroot)
@@ -1078,7 +1080,8 @@ pdf_init_document(hd_context *ctx, pdf_document *doc)
 	}
 	hd_catch(ctx)
 	{
-        pdf_drop_obj(ctx, dict);
+        if (dict != NULL)
+            pdf_drop_obj(ctx, dict);
         hd_rethrow(ctx);
 	}
 }