[U-Boot] [U-Boot, 2/2] tools: mkenvimage: Fix possible segfault on stdin input

[Tom Rini]

On Fri, Apr 20, 2018 at 03:29:31PM +0200, Alexander Dahl wrote:

> The size of 'filebuf' was not increased as more and more bytes are read
> from stdin, but 'filebuf' was always reallocated to the same fix size.
> This works as long as only less bytes than the initial buffer size come
> in, for more input this will segfault. (It actually does, I tested
> that.) So for each loop cycle the buffer size has to be increased by the
> number of bytes we want to read.
> 
> Signed-off-by: Alexander Dahl <ada at thorsis.com>

Applied to u-boot/master, thanks!

-- 
Tom
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