Fix infinite recursion when guessing type of variable which is being assigned to

modules/gdscript/gdscript_editor.cpp

@@ -1891,7 +1891,7 @@ static bool _guess_identifier_type(GDScriptParser::CompletionContext &p_context,
 		suite = suite->parent_block;
 	}
 
-	if (last_assigned_expression && last_assign_line != p_context.current_line) {
+	if (last_assigned_expression && last_assign_line < p_context.current_line) {
 		GDScriptParser::CompletionContext c = p_context;
 		c.current_line = last_assign_line;
 		r_type.assigned_expression = last_assigned_expression;