builtin/ls-remote.c: rearrange xcalloc arguments

xcalloc() takes two arguments: the number of elements and their size.
cmd_ls_remote() passes the arguments in reverse order, passing the
size of a char*, followed by the number of char* to be allocated.

Rearrange them so they are in the correct order.

Signed-off-by: Brian Gesiak <modocache@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/ls-remote.c

@@ -92,7 +92,7 @@ int cmd_ls_remote(int argc, const char **argv, const char *prefix)
 
 	if (argv[i]) {
 		int j;
-		pattern = xcalloc(sizeof(const char *), argc - i + 1);
+		pattern = xcalloc(argc - i + 1, sizeof(const char *));
 		for (j = i; j < argc; j++) {
 			int len = strlen(argv[j]);
 			char *p = xmalloc(len + 3);