patch 8.2.0572: using two lines for free and reset

Problem:    Using two lines for free and reset.
Solution:   Use VIM_CLEAR() instead. (Yegappan Lakshmanan)
diff --git a/src/misc2.c b/src/misc2.c
index 5fc2040..db03b5b 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -4356,10 +4356,7 @@
 	    int i;
 
 	    for (i = 0; i < *argc; ++i)
-	    {
-		vim_free((*argv)[i]);
-		(*argv)[i] = NULL;
-	    }
+		VIM_CLEAR((*argv)[i]);
 	    return FAIL;
 	}
 	(*argv)[*argc] = (char *)vim_strsave(s);
diff --git a/src/version.c b/src/version.c
index 40e048d..c5b7c8b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    572,
+/**/
     571,
 /**/
     570,