fix a segv with libvips 8.16

Author: jcupitt

TODO

@@ -1,3 +1,4 @@
+- fix scRGB with alpha
 
 - "reset" in display bar resets the position of scale/offset widgets, but does
   not reset the menu items (eg. tick on falsecolour)

src/main-batch.c

@@ -316,6 +316,9 @@ main_print_ws(Workspace *ws, gboolean *found)
 int
 main(int argc, char **argv)
 {
+	if (VIPS_INIT(argv[0]))
+		vips_error_exit("unable to start libvips");
+
     main_option_batch = TRUE;
 	main_option_no_load_menus = TRUE;
 

src/main-gui.c

@@ -39,6 +39,9 @@ static GOptionEntry main_gui_options[] = {
 int
 main(int argc, char **argv)
 {
+	if (VIPS_INIT(argv[0]))
+		vips_error_exit("unable to start libvips");
+
 	/* First time we've been run? Show a welcome message. We must do this
 	 * before main_startup().
 	 */

src/main.c

@@ -169,8 +169,6 @@ void
 main_startup(int argc, char **argv)
 {
 	main_argv0 = argv[0];
-	if (VIPS_INIT(argv[0]))
-		vips_error_exit("unable to start libvips");
 
 #ifdef DEBUG
 	vips_leak_set(TRUE);