proc: fold kmalloc() + strcpy() into kmemdup()

strcpy() will recalculate string length second time which is
unnecessary in this case.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Link: https://lore.kernel.org/r/90af27c1-0b86-47a6-a6c8-61a58b8aa747@p183
Signed-off-by: Christian Brauner <brauner@kernel.org>
1 file changed