package/pcre: fix license hash

Commit 0e5a901d forgot to update license
hash (updates in year and email)

Fixes:
 - http://autobuild.buildroot.org/results/045cd98a4067f1314deb66f52240d2db2000ec4d



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>