package/exim: fix build error during install step
exim builds some files during the 'make install' step, and these fail with
an error:
lookups/lf_quote.c:49:3: error: 'for' loop initial declarations are only allowed in C99 mode
for (int j = 0; j < vlength; j++)
^
Fix by passing the -std=c99 here, as it is already passed in the build
step.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Cc: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Luca Ceresoli