Mark assert lines as safe in gdscript

Now calling _reduce_node_type with debugging enabled to determine
if assert line is safe. Part of doing this required the assert line
to be stored away. Now the AssertNode line is being correctly set.
Newlines are now marked safe always

modules/gdscript/gdscript_parser.cpp

@@ -2785,6 +2785,7 @@ void GDScriptParser::_parse_block(BlockNode *p_block, bool p_static) {
 					return;
 				}
 
+				_mark_line_as_safe(line);
 				NewLineNode *nl2 = alloc_node<NewLineNode>();
 				nl2->line = line;
 				p_block->statements.push_back(nl2);
@@ -3299,6 +3300,8 @@ void GDScriptParser::_parse_block(BlockNode *p_block, bool p_static) {
 					return;
 				}
 
+				int assert_line = tokenizer->get_token_line();
+
 				tokenizer->advance();
 
 				Vector<Node *> args;
@@ -3312,8 +3315,14 @@ void GDScriptParser::_parse_block(BlockNode *p_block, bool p_static) {
 					return;
 				}
 
+#ifdef DEBUG_ENABLED
+				// Mark as safe, let type check mark as unsafe if needed
+				_mark_line_as_safe(assert_line);
+				_reduce_node_type(args[0]);
+#endif
 				AssertNode *an = alloc_node<AssertNode>();
 				an->condition = _reduce_expression(args[0], p_static);
+				an->line = assert_line;
 
 				if (args.size() == 2) {
 					an->message = _reduce_expression(args[1], p_static);