patch 7.4.1858

Problem:    When a channel writes to a buffer it doesn't find a buffer by the
            short name but re-uses it anyway.
Solution:   Find buffer also by the short name.

src/version.c

@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1858,
 /**/
     1857,
 /**/