microvm: fix memory leak in microvm_fix_kernel_cmdline

In microvm_fix_kernel_cmdline(), fw_cfg_modify_string() is duplicating
cmdline instead of taking ownership of it. Free it afterwards to avoid
leaking it.

Reported-by: Coverity (CID 1407218)
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Sergio Lopez <slp@redhat.com>
Message-Id: <20191112163423.91884-1-slp@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 file changed