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-rw-r--r--src/mkhelp.pl2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mkhelp.pl b/src/mkhelp.pl
index 318e5986d..6610760bf 100644
--- a/src/mkhelp.pl
+++ b/src/mkhelp.pl
@@ -156,7 +156,7 @@ void hugehelp(void)
return;
headerlen = 10;
- z.avail_in = sizeof(hugehelpgz) - headerlen;
+ z.avail_in = (unsigned int)(sizeof(hugehelpgz) - headerlen);
z.next_in = (unsigned char *)hugehelpgz + headerlen;
z.zalloc = (alloc_func)Z_NULL;
z.zfree = (free_func)Z_NULL;