patch 7.4.863

Problem:    plines_nofill() used without the diff feature.
Solution:   Define PLINES_NOFILL().

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    863,
 /**/
     862,
 /**/