patch 9.0.0477: missing dependency may cause crashes on incomplete build

Problem:    Missing dependency may cause crashes on incomplete build.
Solution:   Add dependency.
diff --git a/src/Makefile b/src/Makefile
index 59c9b64..668a87f 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -4191,7 +4191,7 @@
  auto/osdef.h ascii.h keymap.h termdefs.h macros.h option.h beval.h \
  proto/gui_beval.pro structs.h regexp.h gui.h libvterm/include/vterm.h \
  libvterm/include/vterm_keycodes.h alloc.h ex_cmds.h spell.h proto.h \
- globals.h errors.h
+ globals.h errors.h vim9.h
 objects/viminfo.o: viminfo.c vim.h protodef.h auto/config.h feature.h os_unix.h \
  auto/osdef.h ascii.h keymap.h termdefs.h macros.h option.h beval.h \
  proto/gui_beval.pro structs.h regexp.h gui.h libvterm/include/vterm.h \
diff --git a/src/version.c b/src/version.c
index 77db155..6155446 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    477,
+/**/
     476,
 /**/
     475,
diff --git a/src/vim9type.c b/src/vim9type.c
index b92a7af..4484aba 100644
--- a/src/vim9type.c
+++ b/src/vim9type.c
@@ -20,6 +20,11 @@
 # include <float.h>
 #endif
 
+// When not generating protos this is included in proto.h
+#ifdef PROTO
+# include "vim9.h"
+#endif
+
 /*
  * Allocate memory for a type_T and add the pointer to type_gap, so that it can
  * be easily freed later.