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-rw-r--r--wiretap/file_wrappers.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/wiretap/file_wrappers.c b/wiretap/file_wrappers.c
index 3f5e5e23f0..300f7348b6 100644
--- a/wiretap/file_wrappers.c
+++ b/wiretap/file_wrappers.c
@@ -928,7 +928,7 @@ file_seek(FILE_T file, gint64 offset, int whence, int *err)
*/
unsigned had = (unsigned)(file->next - file->out);
if (-offset <= had) {
- file->have -= offset;
+ file->have -= (unsigned)offset;
file->next += offset;
file->pos += offset;
return file->pos;