dont segfault on empty token "match"

source/terminal.c

@@ -16,11 +16,13 @@ void cterm_render_callback(const char * const string,
 	}
 
 	terminal_hl_t * term_hl = (terminal_hl_t*)attributes;
-	if (term_hl->attribute) {
-		fputs(term_hl->attribute, stdout);
-	}
-	if (term_hl->foreground_color) {
-		fputs(term_hl->foreground_color, stdout);
+	if (term_hl) {
+		if (term_hl->attribute) {
+			fputs(term_hl->attribute, stdout);
+		}
+		if (term_hl->foreground_color) {
+			fputs(term_hl->foreground_color, stdout);
+		}
 	}
 	for (int i = 0; i < length; i++) {
 		putchar(*(string+i));