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Fix issues reported by checkpatch.pl script in hv.c and
balloon.c
 - Remove unnecessary parentheses
 - Remove extra newlines
 - Remove extra spaces
 - Add spaces between comparison operators
 - Remove comparison with NULL in if statements

No functional changes intended
Signed-off-by: Aditya Nagesh <adityanagesh@linux.microsoft.com>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/1717152521-6439-1-git-send-email-adityanagesh@linux.microsoft.com

Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1717152521-6439-1-git-send-email-adityanagesh@linux.microsoft.com>