Fix generic-popup failure after empty engine-settings dialog

The error exit ofthe Engine #N Settings dialog in case of an engine without
options forgot to clear currentCps, with as a result that the generic popup
thought every subsequent popup was an empty one, and kept repeating the
'engine has no options' error message for every dialog.

diff --git a/xoptions.c b/xoptions.c
index d6b5b92..d936f06 100644 (file)
--- a/xoptions.c
+++ b/xoptions.c
@@ -934,7 +934,7 @@ GenericPopUp(Option *option, char *title, int dlgNr)
 
     if(currentCps) { // Settings popup for engine: format through heuristic
        int n = currentCps->nrOptions;
-       if(!n) { DisplayNote(_("Engine has no options")); return 0; }
+       if(!n) { DisplayNote(_("Engine has no options")); currentCps = NULL; return 0; }
        if(n > 50) width = 4; else if(n>24) width = 2; else width = 1;
        height = n / width + 1;
        if(n && (currentOption[n-1].type == Button || currentOption[n-1].type == SaveButton)) currentOption[n].min = 1; // OK on same line