Subject: Discard extra "M" lines in response to "version"
From: Richard Hansen <ubuntu-a7x@scientician.org>
Bug-Ubuntu: https://bugs.launchpad.net/bugs/1413084
Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=775883

Some CVS servers print more than one "M" line in response to a
"version" command.  For example:

Client: version
Server: M Concurrent Versions System (CVS) 1.12.13 (client/server)
Server: M with CVSACL Patch 1.2.5 (cvsacl.sourceforge.net)
Server: ok

This patch causes cvsps to consume all such lines rather than fail.

--- a/cvs_direct.c
+++ b/cvs_direct.c
@@ -916,7 +916,8 @@
     else
 	debug(DEBUG_APPERROR, "cvs_direct: didn't read version: %s", lbuff);
     
-    read_line(ctx, lbuff);
+    while (strncmp(lbuff, "M ", 2) == 0)
+	read_line(ctx, lbuff);
     if (strcmp(lbuff, "ok") != 0)
 	debug(DEBUG_APPERROR, "cvs_direct: protocol error reading version");