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Although -Wmain-return-type is not considered as error (unlike
-Wimplicit-int), but just a warning, let's fix it for the future.
<stdin>:1:1: warning: return type of 'main' is not 'int' [-Wmain-return-type]
Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 3c9d067590)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>