patch 7.4.1086

Problem:    Crash with an extremely long buffer name.
Solution:   Limit the return value of vim_snprintf(). (Dominique Pelle)

Author: brammool

src/buffer.c

@@ -2793,6 +2793,8 @@ buflist_list(eap)
 		(buf->b_flags & BF_READERR) ? 'x'
 					    : (bufIsChanged(buf) ? '+' : ' '),
 		NameBuff);
+	if (len > IOSIZE - 20)
+	    len = IOSIZE - 20;
 
 	/* put "line 999" in column 40 or after the file name */
 	i = 40 - vim_strsize(IObuff);

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1086,
 /**/
     1085,
 /**/