Wait for parsemail to finish

Attempt to fix concurrency errors, maybe.

Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
diff --git a/default.rc b/default.rc
index 17eaaf4..4d0ea10 100644
--- a/default.rc
+++ b/default.rc
@@ -1,6 +1,6 @@
 INCLUDERC=$HOME/procmail/common.rc
 
-:0
+:0 w
 | $PARSEMAIL
 
 # vim: ts=2 sw=2 sts=2 et syntax=procmail
diff --git a/git.rc b/git.rc
index 7455d16..c4581a5 100644
--- a/git.rc
+++ b/git.rc
@@ -14,7 +14,7 @@
     | formail -I "From:$INBODYFROM"
 }
 
-:0
+:0 w
 | $PARSEMAIL
 
 # vim: ts=2 sw=2 sts=2 et syntax=procmail
diff --git a/netdevbpf.rc b/netdevbpf.rc
index f6cbc54..636a2c5 100644
--- a/netdevbpf.rc
+++ b/netdevbpf.rc
@@ -87,7 +87,7 @@
 | formail -a "X-Patchwork-State: RFC"
 
 # Force list-id to match patchwork joint project definition
-:0
+:0 w
 | $PARSEMAIL --list-id bpf.vger.kernel.org
 
 # vim: ts=2 sw=2 sts=2 et syntax=procmail