btrfs-progs: Fix getopt on arm/ppc platforms

(same as commit bb0eabc383e9a3fde7cdb02591ca88243f3e31fb)
There, 'char' is unsigned, so once assigned '-1' from getopt, it gets
the value 255. Then, it compared to '-1' gives false.

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/btrfs-crc.c b/btrfs-crc.c
index e4cda431..1990534a 100644
--- a/btrfs-crc.c
+++ b/btrfs-crc.c
@@ -34,7 +34,7 @@ void usage(void)
 
 int main(int argc, char **argv)
 {
-	char c;
+	int c;
 	unsigned long checksum = 0;
 	char *str;
 	char *buf;