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, 2 insertions, 2 deletions

diff --git a/lib/libalpm/util.c b/lib/libalpm/util.c
index c5485925..c44da4f3 100644
--- a/lib/libalpm/util.c
+++ b/lib/libalpm/util.c
@@ -175,7 +175,7 @@ char *_alpm_strtrim(char *str)
 		return(str);
 	}
 
-	while(isspace((int)*pch)) {
+	while(isspace((unsigned char)*pch)) {
 		pch++;
 	}
 	if(pch != str) {
@@ -188,7 +188,7 @@ char *_alpm_strtrim(char *str)
 	}
 
 	pch = (str + (strlen(str) - 1));
-	while(isspace((int)*pch)) {
+	while(isspace((unsigned char)*pch)) {
 		pch--;
 	}
 	*++pch = '\0';