patch 8.0.1307: compiler warning for ignoring return value

Problem:    Compiler warning for ignoring return value of ftruncate(). (Tony
            Mechelynck)
Solution:   Assign returned value to "ignore".

src/version.c

@@ -766,6 +766,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1307,
 /**/
     1306,
 /**/