run_chroot: always clear script output buffer

If the script output does not end in a newline there could still be data
in the buffer after the poll loop.

Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/libalpm/util.c b/lib/libalpm/util.c
index 5696a45a..7e8f85ed 100644
--- a/lib/libalpm/util.c
+++ b/lib/libalpm/util.c
@@ -681,6 +681,12 @@ int _alpm_run_chroot(alpm_handle_t *handle, const char *cmd, char *const argv[],
 				STOP_POLLING(parent2child);
 			}
 		}
+		/* process anything left in the input buffer */
+		if(ilen) {
+			/* buffer would have already been flushed if it had a newline */
+			strcpy(ibuf + ilen, "\n");
+			_alpm_chroot_process_output(handle, ibuf);
+		}
 
 #undef STOP_POLLING