Merge remote-tracking branch 'remotes/quic/tags/pull-hex-20210812' into staging

Hexagon (disas/hexagon.c) fix memory leak for early exit

Don't allocate the string until error conditions have been checked

Fixes: a00cfed0e ("Hexagon (disas) disassembler")
Eliminate Coverity CID 1460121 (Resource leak)

# gpg: Signature made Fri 13 Aug 2021 04:03:00 BST
# gpg:                using RSA key 7B0244FB12DE4422
# gpg: Good signature from "Taylor Simpson (Rock on) <tsimpson@quicinc.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 3635 C788 CE62 B91F D4C5  9AB4 7B02 44FB 12DE 4422

* remotes/quic/tags/pull-hex-20210812:
  Hexagon (disas/hexagon.c) fix memory leak for early exit cases

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>