busybox: add 1.18.2 modprobe fix

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/busybox/busybox-1.18.2/busybox-1.18.2-modprobe.patch

@@ -0,0 +1,20 @@
+--- busybox-1.18.2/modutils/modutils.c
++++ busybox-1.18.2-modprobe/modutils/modutils.c
+@@ -71,12 +71,11 @@ char* FAST_FUNC parse_cmdline_module_opt
+ 	optlen = 0;
+ 	while (*++argv) {
+ 		options = xrealloc(options, optlen + 2 + strlen(*argv) + 2);
+-		/* Older versions were enclosing space-containing *argv in "",
+-		 * but both modprobe and insmod from module-init-tools 3.11.1
+-		 * don't do this anymore. (As to extra trailing space,
+-		 * insmod adds it but modprobe does not. We do in both cases)
+-		 */
+-		optlen += sprintf(options + optlen, "%s ", *argv);
++		/* Spaces handled by "" pairs, but no way of escaping quotes */
++//TODO: module-init-tools version 3.11.1 quotes only value:
++//it generates var="val with spaces", not "var=val with spaces"
++//(and it won't quote var *name* even if it has spaces)
++		optlen += sprintf(options + optlen, (strchr(*argv, ' ') ? "\"%s\" " : "%s "), *argv);
+ 	}
+ 	return options;
+ }