package/expedite: fix build issue with gcc < 5

package/expedite: fix build issue with gcc < 5

The code use for loop initial declarations which are only allowed in
C99 mode which is not the default C standard with gcc < 5.

This way of writing for loop was added by the latest commit and it is
not consistent with the rest of the code.
So revert to the C89 for loop syntax.

Reported upstream:
https://phab.enlightenment.org/T5440

Fixes:
http://autobuild.buildroot.net/results/ed8/ed840755e8e486e48eab8c13a8bb5e9a448199ce

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>