patch 8.1.1054: not checking return value of ga_grow()

Problem:    Not checking return value of ga_grow(). (Coverity)
Solution:   Only append when ga_grow() returns OK.
diff --git a/src/version.c b/src/version.c
index dd746ca..ba14981 100644
--- a/src/version.c
+++ b/src/version.c
@@ -776,6 +776,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1054,
+/**/
     1053,
 /**/
     1052,