patch 8.0.0545: edit test may fail on some systems

Problem:    Edit test may fail on some systems.
Solution:   If creating a directory with a very long path fails, bail out.

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    545,
 /**/
     544,
 /**/