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

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

diff --git a/libbb/copyfd.c b/libbb/copyfd.c
index 2538d496dbcf63ec707db0db2da8f7a18bf6b5f3..82622c06f2309cd693e93ec119a89ba97ee68425 100644 (file)
--- 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