serprog.c: Use braces in both branches of conditional statement

As per the coding style, if one branch of a conditional statement
needs braces, all other branches need to have braces as well.

BUG=b:185191942
TEST=builds

Change-Id: I4fdccbd66f0351af98811bf7c2d8e15f0a99d852
Signed-off-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/54862
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
1 file changed