tar: return correct exit code for empty tar file

The WIN32 implementation of check_errors_in_children shouldn't
have reset bb_got_signal as it's used to signal an error.

1 files changed, 4 insertions, 0 deletions

diff --git a/include/bb_archive.h b/include/bb_archive.h
index 5abcdcb44..7d70ac086 100644
--- a/include/bb_archive.h
+++ b/include/bb_archive.h
@@ -285,7 +285,11 @@ enum {
         BBUNPK_SEAMLESS_MAGIC = (1 << 31) * ENABLE_ZCAT * SEAMLESS_COMPRESSION,
 };
 
+#if !ENABLE_PLATFORM_MINGW32
 void check_errors_in_children(int signo);
+#else
+#define check_errors_in_children(s) ((void)0)
+#endif
 #if BB_MMU
 void fork_transformer(int fd,
         int signature_skipped,