/ curl Public
examples/http2-upload: fix a crash #5463
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index.htmldoes not exist in the directory from which the example
is invoked, the
fopen(upload, "rb")invocation in
NULL. This value is subsequently passed as the
freadinvocation in the
read_callbackfunction, which is the
actual cause of the crash (apparently
freadassumes that argument to
In addition, mitigate some possible crashes of similar origin.