Some archives don't have DIZ in the root directory

(I'm looking at you, mist1221.zip)

... so first try to extract DIZ files from the root of the archive, then try again searching nested directories too. <sigh>

src/sbbs3/filedat.c

@@ -1027,20 +1027,23 @@ bool extract_diz(scfg_t* cfg, file_t* f, str_list_t diz_fnames, char* path, size
 			return false;
 	}
 
-	if(extract_files_from_archive(archive
-		,/* outdir: */cfg->temp_dir
-		,/* allowed_filename_chars: */NULL /* any */
-		,/* with_path: */true
-		,/* overwrite: */false
-		,/* max_files: */strListCount(diz_fnames)
-		,/* file_list: */diz_fnames
-		,/* error: */NULL, 0) >= 0) {
-		for(i = 0; diz_fnames[i] != NULL; i++) {
-			safe_snprintf(path, maxlen, "%s%s", cfg->temp_dir, diz_fnames[i]); // no slash
-			if(fexistcase(path))
-				return true;
+	for(int nested = 0; nested <= 1; nested++) {
+		if(extract_files_from_archive(archive
+			,/* outdir: */cfg->temp_dir
+			,/* allowed_filename_chars: */NULL /* any */
+			,/* with_path: */!nested
+			,/* overwrite: */false
+			,/* max_files: */strListCount(diz_fnames)
+			,/* file_list: */diz_fnames
+			,/* error: */NULL, 0) >= 0) {
+			for(i = 0; diz_fnames[i] != NULL; i++) {
+				safe_snprintf(path, maxlen, "%s%s", cfg->temp_dir, diz_fnames[i]); // no slash
+				if(fexistcase(path))
+					return true;
+			}
+			if(nested)
+				return false;
 		}
-		return false;
 	}
 
 	char* fext = getfext(f->name);