patch 8.0.1492: memory leak in balloon_split()

Problem:    Memory leak in balloon_split().
Solution:   Free the balloon lines. Free the balloon when exiting.
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 632b982..4b34538 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -1447,6 +1447,8 @@
 	    /* Skip the first and last item, they are always empty. */
 	    for (i = 1; i < size - 1; ++i)
 		list_append_string(rettv->vval.v_list, array[i].pum_text, -1);
+	    while (size > 0)
+		vim_free(array[--size].pum_text);
 	    vim_free(array);
 	}
     }
diff --git a/src/misc2.c b/src/misc2.c
index 368303e..0deccdf 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -1116,6 +1116,10 @@
     spell_free_all();
 # endif
 
+#if defined(FEAT_INS_EXPAND) && defined(FEAT_BEVAL_TERM)
+    ui_remove_balloon();
+# endif
+
 # if defined(FEAT_USR_CMDS)
     /* Clear user commands (before deleting buffers). */
     ex_comclear(NULL);
diff --git a/src/version.c b/src/version.c
index 1bd0295..be5f864 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1492,
+/**/
     1491,
 /**/
     1490,