Check lseek return type against (off_t) -1.

diff --git a/helper/ext2.c b/helper/ext2.c
index beef8ed..2395871 100644 (file)
--- a/helper/ext2.c
+++ b/helper/ext2.c
@@ -65,7 +65,7 @@ ext2_start (const char *hostcpu, const char *appliance,
   if (fd == -1)
     error (EXIT_FAILURE, errno, "open: %s", appliance);
 
-  if (lseek (fd, APPLIANCE_SIZE - 1, SEEK_SET) == -1)
+  if (lseek (fd, APPLIANCE_SIZE - 1, SEEK_SET) == (off_t) -1)
     error (EXIT_FAILURE, errno, "lseek");
 
   char c = 0;