modindex: getopt_long returns int not char (fix ppc64 bug)

getopt_long returns an int and not a char. The existing code will fail a return
test on ppc64 where the -1 comparison will never succeed, so instead garbage
will exist in 'opt' at the end of the main while loop.

Signed-off-by: Jon Masters <jcm@jonmasters.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/modindex.c b/modindex.c
index 2798838..24dec20 100644
--- a/modindex.c
+++ b/modindex.c
@@ -113,7 +113,7 @@ static struct option options[] = {
 
 int main(int argc, char *argv[])
 {
-	char opt;
+	int opt;
 	char mode = 0;
 	char *filename = NULL;
 	char *key = NULL;