Fix uninit memory read in undo code. Fix uint32_t in proto file.
A few minor changes.
diff --git a/runtime/doc/undo.txt b/runtime/doc/undo.txt
index 05e5555..2c5568e 100644
--- a/runtime/doc/undo.txt
+++ b/runtime/doc/undo.txt
@@ -263,9 +263,10 @@
*E824* The version number of the undo file indicates that it's written by a
newer version of Vim. You need that newer version to open it. Don't
write the buffer if you want to keep the undo info in the file.
-"Undo file contents changed"
+"File contents changed, cannot use undo info"
The file text differs from when the undo file was written. This means
- the undo file cannot be used, it would corrupt the text.
+ the undo file cannot be used, it would corrupt the text. This also
+ happens when 'encoding' differs from when the undo file was written.
*E825* *E826* The undo file does not contain valid contents and cannot be
used.
*E827* The magic number at the end of the file was not found. This usually