Fix opt type in dpkg (closes: #118975).

Changelog

@@ -23,6 +23,7 @@
 	    -- Fix tar segfault when include list is empty and exclude list is
 	       not.
 	    -- Fix sed s/$/@/ handling (noted by Joshua Hudson).
+	    -- Fix opt type in dpkg (closes: #118975).
 	* Magick
 	    -- made init run inittab command's in the order they show up
 		in the inittab file (FIFO instead of LIFO).

archival/dpkg.c

@@ -1332,7 +1332,7 @@ extern int dpkg_main(int argc, char **argv)
 {
 	deb_file_t **deb_file = NULL;
 	status_node_t *status_node;
-	char opt = 0;
+	int opt;
 	int package_num;
 	int dpkg_opt = 0;
 	int deb_count = 0;