Make strtok_r a dependency of abuffer / fix typo.

Fix ticket 413.

diff --git a/configure b/configure
index 9cee2a0..e131704 100755 (executable)
--- a/configure
+++ b/configure
@@ -1501,7 +1501,7 @@ tcp_protocol_deps="network"
 udp_protocol_deps="network"
 
 # filters
-abuffer="strtok_r"
+abuffer_filter_deps="strtok_r"
 aformat_filter_deps="strtok_r"
 blackframe_filter_deps="gpl"
 boxblur_filter_deps="gpl"