patch 7.4.1656

Problem:    Crash when using partial with a timer.
Solution:   Increment partial reference count. (Hirohito Higashi)

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1656,
 /**/
     1655,
 /**/