rev: memory leak fix

Moving the malloc out of loop will make leak to disappear, and
the command might run few jiffie quicker when there are 1+N
arguments.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

text-utils/rev.c

@@ -107,6 +107,8 @@ int main(int argc, char *argv[])
 	argc -= optind;
 	argv += optind;
 
+	buf = xmalloc(bufsiz * sizeof(wchar_t));
+
 	do {
 		if (*argv) {
 			if ((fp = fopen(*argv, "r")) == NULL) {
@@ -118,8 +120,6 @@ int main(int argc, char *argv[])
 			filename = *argv++;
 		}
 
-		buf = xmalloc(bufsiz * sizeof(wchar_t));
-
 		while (fgetws(buf, bufsiz, fp)) {
 			len = wcslen(buf);