libbb/copyfd.c: fix the case of copy buffer <= 4kb

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/libbb/copyfd.c b/libbb/copyfd.c
index 2538d496d..82622c06f 100644
--- a/libbb/copyfd.c
+++ b/libbb/copyfd.c
@@ -17,19 +17,21 @@ static off_t bb_full_fd_action(int src_fd, int dst_fd, off_t size)
 {
         int status = -1;
         off_t total = 0;
+        bool continue_on_write_error = 0;
 #if CONFIG_FEATURE_COPYBUF_KB <= 4
         char buffer[CONFIG_FEATURE_COPYBUF_KB * 1024];
         enum { buffer_size = sizeof(buffer) };
 #else
         char *buffer;
         int buffer_size;
-        bool continue_on_write_error = 0;
+#endif
 
         if (size < 0) {
                 size = -size;
                 continue_on_write_error = 1;
         }
 
+#if CONFIG_FEATURE_COPYBUF_KB > 4
         if (size > 0 && size <= 4 * 1024)
                 goto use_small_buf;
         /* We want page-aligned buffer, just in case kernel is clever