pidgin/pidgin

Fix conditional.
release-2.x.y
2014-01-13, Mark Doliner
c03eefbf89a8
Fix conditional.

I think this would have incorrectly found a Connection: header in the
XML body. No idea what the harm is.
installed_m4=purple.m4
EXTRA_DIST=$(installed_m4)
m4datadir=$(datadir)/aclocal
m4data_DATA=$(installed_m4)