cygwin fix : use unsigned char for ctype function

See http://www.nabble.com/-PATCH-RFA--Distinguish-between-EOF-and-character-with-value-0xff-td23161772.html#a23188494

cygwin 1.7 actually displays a warning when using signed char with the ctype
function, so that compilation fails when using -Wall -Werror.

So we just cast all arguments to unsigned char.

Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/libalpm/be_package.c b/lib/libalpm/be_package.c
index 1cd30c28..c1a43438 100644
--- a/lib/libalpm/be_package.c
+++ b/lib/libalpm/be_package.c
@@ -82,7 +82,7 @@ static int parse_descfile(struct archive *a, pmpkg_t *newpkg)
 			} else if(!strcmp(key, "license")) {
 				newpkg->licenses = alpm_list_add(newpkg->licenses, strdup(ptr));
 			} else if(!strcmp(key, "builddate")) {
-				char first = tolower(ptr[0]);
+				char first = tolower((unsigned char)ptr[0]);
 				if(first > 'a' && first < 'z') {
 					struct tm tmp_tm = {0}; /* initialize to null in case of failure */
 					setlocale(LC_TIME, "C");