patch 8.2.0387: error for possible NULL argument to qsort()

Problem:    Error for possible NULL argument to qsort().
Solution:   Don't call qsort() when there is nothing to sort. (Dominique
            Pelle, closes #5780)
diff --git a/src/version.c b/src/version.c
index 7d2f12e..a25685c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    387,
+/**/
     386,
 /**/
     385,