patch 7.4.922
Problem:    Leaking memory with ":helpt {dir-not-exists}".
Solution:   Free dirname. (Dominique Pelle)
diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index b23f158..c2b600c 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -6574,6 +6574,7 @@
     if (dirname == NULL || !mch_isdir(dirname))
     {
 	EMSG2(_("E150: Not a directory: %s"), eap->arg);
+	vim_free(dirname);
 	return;
     }
 
diff --git a/src/version.c b/src/version.c
index 3792aa0..73c1b8f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    922,
+/**/
     921,
 /**/
     920,